Saturday through Monday, September 5–7, 2026, was the weekend Roblox's biggest September patch stopped being a launch headline and started producing real trade comps. Blox Fruits Update 30 entered its second and third days with Magnet Fruit listings finally separating physical from permanent, Magnet Gacha skins building their own micro-market, and Dragon returning to the rollable pool softening some permanent Dragon asks. Adopt Me Ballet Swan — the 600-Robux limited legendary gamepass pet from September 4 — started forming a floor while Fairytale Egg legendaries like Three Blind Mice settled into week-two ride-potion comps. Grow a Garden Beanstalk Event Part 2, which opened Friday at 20:30 UTC, added Divine-tier Chest Mimic alongside Part 1's Jabberwock on parallel scarcity tracks. And on Roblox Limited trading, the first major UGC resale unlock of the month arrived: Silver King of the Night's 95-Robux hat cleared its lock on September 7, with Spiderman Hanging's 3,000-unit emote following on September 8. This guide covers what moved between September 5 and 7 and how to list without quoting Magnet hour-one screenshots, trading egg legendaries for Ballet Swan at par, or repricing MM2 Chroma Icecream on a tracker that cut the item below 1,500 over the weekend.
Other hubs stayed active on different clocks. Steal a Brainrot held post-Update 64 Bee Lucky Block scarcity while community trackers still anchor on Strawberry Elephant and Headless Horseman. Murder Mystery 2's Chroma Icecream entered its fifth week post-Summer Event with Supreme Values cutting the knife to 1,450 and mm2values.app still near 1,900 — a 450-point spread that makes cross-checking mandatory. UGC avatar backgrounds from August drops approach mid-September unlocks, and Developer Forum threads kept pushing for more than four items per trade. Tag obtain methods, verify in the trade window, and post where buyers can check your work.
Blox Fruits day two: Magnet comps, Gacha skins, and the Dragon supply question
Blox Fruits Update 30 landed September 5 at 14:00 UTC. By September 7, the launch hype window had closed enough for day-two comps to mean something. Magnet — the Mythical Natural-type fruit with scrap-pulling mechanics, free flight, a sword-disarming grab, and a Maximum Overdrive transformation — still has no settled community tier, but the gap between physical and permanent listings is finally visible. Physical Magnet trades like a novelty pull; permanent Magnet at 3,500 Robux trades like a gamepass with a 3× multiplier on community calculators. Anyone quoting a single Magnet number without tagging the version is still guessing.
The Magnet Gacha event is the parallel market traders cannot ignore. Every hour at the :00 mark, Magnetic enemies spawn across your sea; defeating them drops Magnet Tokens spendable at the Gacha Dealer in Middletown. The chase tier — Lime Blade at 33% down to Arcsteel Magnet at 1% — is its own listing category, separate from the base fruit. Chromatic Gacha Box rolls in the shop add a Robux-paid path that inflates skin supply faster than token farming alone. Tag every Blox Fruits listing with skin name, obtain method (token farm versus Chromatic Box), and physical versus permanent type. Dragon also returned to the rollable Gacha pool in Update 30, which may soften permanent Dragon asks if supply spikes — run the Blox Fruits values calculator the same day you accept, and do not trade multiple high-tier permanents for hour-two Magnet unless you have verified the fruit's PvP ceiling against your own playstyle.
Adopt Me: Ballet Swan finds a floor while egg legendaries settle into ride-potion tiers
Adopt Me shipped Ballet Swan on September 4 — a limited legendary gamepass pet at 600 Robux with no Bucks alternative and a Limited tag on the wiki. By September 7, day-three listings finally had enough Traderie volume to compare against recent limited gamepass legendaries, though the item has not been pulled from the shop yet and Uplift has not rotated the Fairytale theme. Days 1–3 valuations remain scattered; anyone quoting a fixed Ballet Swan tier on September 6 or 7 should cite their source and date. The Limited tag matters historically: once Uplift removes Ballet Swan from the gamepass menu, scarcity premiums typically climb over the following weeks.
Do not conflate Ballet Swan with Fairytale Egg legendaries. The egg dropped August 29 with Huntsman Robin and Three Blind Mice at the Legendary tier — hatchable at 1.5% from the Gumball Machine, not gamepass-only. Week-two comps for Three Blind Mice finally have enough volume: community trackers place the regular pet near 1–1.2 ride potions, with neon and mega variants scaling separately. A trade offering "two egg legendaries for one Ballet Swan" on September 7 is still not apples-to-apples — the 600-Robux limited gamepass carries a premium egg legendaries will not match while the shop listing remains live. Fairytale Castle at 8,000 Bucks trades separately as a housing flex. Use Backpack Storage tabs to sort hatchlings from gamepass purchases, and read our Adopt Me value-sites guide before trusting a single list for launch-week pets.
Beanstalk Part 2: Chest Mimic joins Jabberwock on the Divine scarcity board
Grow a Garden Update 1.66.0 opened Beanstalk Event 2026 Part 2 on September 5 at 20:30 UTC. The Part 2 block adds a Gold Cauldron mechanic, an eleven-recipe Crafting Bench, and a Jack NPC leveling track that cuts the fifteen-minute Beanstalk contribution cooldown to ten minutes at level 5. Three staged pets shipped: Sheep (Uncommon), Cloud Hound (Legendary), and Chest Mimic (Divine, Mimic's Bite). By September 7, the first forty-eight hours of Part 2 listings were live — and Chest Mimic at Divine tier sits on a parallel scarcity track from Part 1's Jabberwock, which still had no settled floor by late August.
New seeds include Lilypad Cluster (Legendary), Fableflower (Uncommon multi-harvest), Harpvine (Legendary multi-harvest), Elder Beanstalk (Prismatic multi-harvest), and Wool (Rare). The Pet Mutation Shard Giantbean recipe returns at Friendship level 6 pricing. Tag every Grow a Garden offer with hatch date, egg or shop source, Part 1 versus Part 2 obtain method, and rarity confirmed in the trade window. Friendship Shop Nimbush and main-shop Twist Berry remain separate comps — do not bundle them because both appeared in the same event week. Chest Mimic's Mimic's Bite passive and Jabberwock's Frabjous passive serve different farming roles; treat them as separate Divine listings, not interchangeable adds in a bundle trade.
MM2: Chroma Icecream slides again as published 0.004% odds sink in
Murder Mystery 2's early-September quality-of-life update added official drop-rate statistics to mystery-box detail pages, confirming Chroma weapons at 0.004%. That transparency reframed long-term Chroma comps — but Chroma Icecream from the ended Summer Event kept sliding anyway. Supreme Values cut the knife to 1,450 over the September 5–7 weekend with a typical range of 1,300–1,450, while mm2values.app still listed the item near 1,900 with a 1,700–1,950 range. That 450-point spread is not a rounding error; it is the difference between a fair trade and a loss depending on which list your counterparty cites.
The 2026 Summer Event ended August 23; summer maps left rotation, but limited summer box content remains purchasable with Robux for stragglers. A "Time Until Update" timer appeared in the default lobby, fueling Season 2 speculation — but Roblox has not confirmed that timer points to Season 2. Chroma Icecream entered its fifth week post-event with tracker splits still open. Cross-check any MM2 listing on two live lists, run the MM2 calculator, and read our three-source MM2 guide before posting Chromas at pre-transparency premiums. When Supreme and mm2values disagree by more than 10%, cite both numbers in your listing and let the buyer choose which anchor they accept.
Limited unlocks: Silver King of the Night opens resale, Spiderman Hanging follows Monday
September 7 marked the first major UGC Limited resale unlock of the month. Silver King of the Night — a 95-Robux hat with 2,580 original units, discovered August 6 — cleared its initial resale lock on September 7. With roughly 39% of original stock claimed before unlock and 678 units claimed in the prior seven days alone, day-one resale listings will cluster near the 95-Robux original price until RAP establishes a track. On Roblox Limited trading, the unlock matters because locked inventory cannot trade — spec buyers who overpaid for stock they could not flip for weeks were the main scam vector through August.
Spiderman Hanging — the 250-Robux UGC Limited emote with all 3,000 units claimed, discovered August 9 — unlocks resale on approximately September 8. That is a fully sold-out limited with zero remaining original stock, which typically produces a sharper day-one premium than items with open stock. Other UGC avatar backgrounds from August drops approach unlocks around September 14–25 — Banland Outskirts, Red Black Crystal Diamond Aura Background, and Nightshade Purple Horns (August 26, 3,000 units at 95 Robux, locked until roughly September 25). Developer Forum threads in September kept resurfacing the four-item-per-side trade cap — mass upgrades still require multiple atomic windows, which is exactly the setup behind two-trade scams. Keep upgrade deals inside single windows when possible, and read our scam-avoidance guide before accepting split offers. Premium or Plus membership is required on both sides of every Limited trade.
Steal a Brainrot and the four-slot cap that still will not budge
Steal a Brainrot did not ship a headline update between September 5 and 7, but post-Update 64 Bee Lucky Block brainrots — Orchidox at 0.1% and Pop Pop Petalini at 0.5% — remain in their first scarcity window after the Bee Shop closed. Community value lists still rank Strawberry Elephant, Headless Horseman, and Meowl at the top, with Dragon/Garama calculator units shifting when Saturday update windows add mutations. Document mutation, trait, exist count, and obtain method on every listing; Bee machine pulls and Taco Tuesday exclusives are not interchangeable comps.
The four-item-per-side Limited trade cap remains unchanged despite May 2026 Developer Forum petitions requesting eight or more slots. Roblox has not acknowledged the requests, and the cap still forces upgrade deals across multiple windows — the exact setup behind two-trade scams where one party accepts the first trade and walks away. If you cannot fit an upgrade into four slots per side, either consolidate value into fewer items first or refuse multi-window deals unless you fully trust the counterparty. The 30% Robux fee on Limited trades and the 50% Robux cap per side remain in force; factor both into every comp.
September 5–7 checklist: price the weekend you are on
Three economies tried to find prices at once: Magnet Gacha skins with day-two comps but no settled tier, Ballet Swan with a Limited tag but no pull date, and MM2 Chromas repricing downward despite published 0.004% odds. List with dates, sources, and confirmed rarity — then post where buyers can verify your work before Spiderman Hanging unlocks Monday and September's background unlock wave opens the next Limited wave.
- Tag Magnet Fruit and Magnet Gacha skins separately — physical, permanent, and Chromatic Box pulls are different markets.
- Run the Blox Fruits calculator the same day you accept; Dragon returning to Gacha may move permanent Dragon asks.
- Do not trade two Fairytale Egg legendaries for one Ballet Swan without a deliberate premium — they are different obtain tiers.
- Quote Fairytale Castle as housing, not as a pet add; 8,000 Bucks is grindable, 600 Robux is not.
- Tag Beanstalk Part 2 listings with Part 1 versus Part 2 source — Chest Mimic and Jabberwock are parallel Divine tracks.
- Cross-check MM2 Chroma Icecream on Supreme (near 1,450) and mm2values (near 1,900) before accepting.
- Silver King of the Night unlocked September 7; Spiderman Hanging unlocks approximately September 8 — verify item ID before trading.
- UGC backgrounds and Nightshade Purple Horns are not tradeable until their resale locks expire.
- Refuse multi-window Limited upgrades unless you trust the counterparty — four slots per side is still the cap.
- Keep every trade inside the official in-game window.
September 5 through 7 was the weekend Update 30 produced its first real Blox Fruits comps, Ballet Swan gave Adopt Me a day-three floor above egg legendaries, and MM2 Chroma Icecream kept sliding even after published odds confirmed how rare Chromas actually are. The traders who list cleanly this weekend — tagged sources, verified rarity, two-list cross-checks — are the ones buyers trust when Spiderman Hanging opens resale Monday and September's background unlocks rewrite the Limited board again.