Conducting high-value player-to-player trades in the Pet Simulator 99 (PS99) Trading Plaza can be highly rewarding, but it also carries significant transaction risks. Among the various trading tactics, "Trust Trading" (sending gems or items first) is the most common and devastating scam in the community.
Any player who requests that you send gems through the mailbox first, split a payment across multiple trade windows, or rely on a third-party Discord administrator is trying to steal your assets. Pet Simulator 99 enforces a hard direct trade window limit of 25 billion (25B) gems. Because almost all Huge and lower-tier Titanic pets fall well under this trading cap, there is zero technical reason to ever split a trade.
Complete every transaction in a single, verified window, or cancel the deal immediately. If you need to scale up your diamond reserves safely without dealing with plaza transaction caps, you can buy PS99 Gems from trusted sellers to complete direct trades under the cap.
The Mechanics of Trust Trade Scams: 3 Common Lies
Scammers rely on social engineering, manufactured urgency, and technical excuses to bypass the safety of the game's official trade window. Understanding these lies is critical for protecting your diamond reserves:
Lie 1: "Send Gems via Mailbox First to Avoid Plaza Taxes"
A seller lists a Huge pet in a booth or trade window, then cancels it. They claim that trading directly in the plaza incurs heavy transaction taxes, and ask you to send the diamonds first via the in-game mailbox, promising to mail the Huge pet back immediately after.
- The Reality: The mailbox has no escrow or holding mechanism. Once you click send, the gems are instantly transferred to the scammer's inventory. You have zero leverage, and the scammer will immediately leave the server.
Figure 1: The mailbox is a one-way sending tool. Never use it as a transaction method for buying pets.
Lie 2: "The Pet is Glitched and Invisible, Send Gems First"
During a trade, the seller initiates a swap but the pet slot displays as empty. The seller claims the game is lagging, the pet is "invisible," but assures you it is there. They request that you accept the trade and send your gems, claiming the pet will appear in your inventory once the trade finalizes.
- The Reality: If the trading slot is empty, you will receive nothing. Never accept a trade based on verbal promises. If the UI is lagging, cancel the trade, re-enter the Trading Plaza, and start a fresh trade window.
Lie 3: "Let's Use a Discord Middleman for Security"
For trades exceeding the 25B gem cap, the seller suggests using a "trusted middleman" from a specific Discord trading group to hold the assets.
- The Reality: Over 99% of Discord middleman servers are entirely fake. Scammers run these servers using bot accounts and alt accounts to pose as reputable moderators, only to steal your gems as soon as they are transferred.
To identify visual booth overlapping tricks that scammers run alongside trust trade requests, see our PS99 Trading Plaza Booth Guide.
The Safe Alternative: Collateral Trading
If you are negotiating a transaction that exceeds the 25B gem trading cap (such as trading for a high-tier shiny Titanic pet), you can complete the trade securely without splitting transactions or trusting a middleman. The solution is Collateral Trading in a single window:
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What is Collateral? Instead of sending raw gems across multiple stages, you substitute a portion of the diamond value with highly stable, highly liquid "currency items" (like mainstream Golden/Rainbow Huge pets or stackable Titanic Eggs).
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The Single-Window Flow: If you are buying a 30B gem Titanic pet, place the 25B gem cap maximum in the trade window. Because the trade window has a strict slot limit (usually 18 items max), you cannot place dozens of cheap Huges. Instead, use a few high-value, highly stable pets—such as 5 Rainbow Huge pets valued at 1 billion gems each—or stackable Titanic Eggs to bridge the remaining 5B value in the exact same trade slot.
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The Outcome: The seller receives 30B in total value, and you receive the Titanic pet in a single click. If you need to liquidate these collateral items later, they can be sold in booths within minutes. Crucial Safety Warning: Scammers will often try to offer obscure, low-exist collectibles (like niche hoverboards or old enchants) as collateral, claiming they have a high RAP. Only accept highly stable, liquid items—like Titanic Eggs or mainstream Golden/Rainbow Huge pets—whose value is cross-verified on Cosmic Values.
Always verify the real-time RAP of your collateral items against community databases. For price trend checks, read our PS99 RAP Guide and consult our comprehensive Pet Sim 99 Values Guide.
Trust Trade Warning Matrix
Use the matrix below to match trade proposals in the Trading Plaza with the correct safety actions:
| Seller Proposal | Proposed Method | Risk Level | Safety Action | Secure Counter-Offer |
|---|---|---|---|---|
| "Send half gems via mailbox first" | Mailbox | CRITICAL | SKIP / REPORT | Decline and request a standard single-window trade. |
| "The pet is invisible due to lag, accept now" | Direct Trade | CRITICAL | CANCEL | Cancel the trade. Change servers and re-initiate the window. |
| "Send gems first, I will add the pet in trade 2" | Split Trade | CRITICAL | SKIP | Decline split payments. Keep the trade value under the 25B cap. |
| "Let's trade using my Discord server middleman" | Third-Party Escrow | HIGH | SKIP | Decline Discord trade groups. Use pure in-game collateral pets. |
| "I will give you collateral pets for your high-value item" | Collateral Trade | LOW | VERIFY / ACCEPT | Check Exist counts and Cosmic Values of the collateral pets before accepting. |
If you want to completely bypass the risk of trust trade social engineering, mailbox fraud, or trading plaza scams, you can explore secure checkout paths to buy PS99 Gems or acquire certified Huge pets safely through verified player listings on U7BUY.
FAQ
Why can't I trade more than 25 billion gems in a single trade?
The 25B gem cap is a hardcoded limit implemented by the developers to prevent overflow database bugs and limit the impact of high-end inflation. Any player claiming they can bypass this cap using scripts or codes is a scammer trying to access your account.
How do I report a trust trade scammer to the game developers?
Take immediate screenshots or video recordings of the trade window, chat logs, and the player's Roblox username. You can submit these files through the official Big Games Discord server support channels or use the Roblox in-game Esc menu to report the player for scamming.
Is mailing items to my own alt accounts safe?
Yes, using the mailbox to transfer items between your own verified Roblox accounts is safe, provided you type the destination username correctly. The danger arises when mailing items to other players who have promised to return items afterward.
