A bundle is harder to read than one fruit for one fruit. Use the calculator as a checklist so a duplicate or wrong side does not quietly change your result.
Start with your side
Add only the items you plan to give under Your Offer. Select the exact version and quantity. Finish this side before filling Their Offer. This helps avoid mixing your inventory with the items you hope to receive.
Count copies, not cards
Two copies of an item contribute twice its estimate. For example, two teaching items worth 40 each and one worth 20 total 100. A single visual card may represent multiple copies, so read the quantity control. These numbers are illustrative.
Fix the side before reading the verdict
If you entered everything backwards, use Swap. A result describes the trade from your side of the screen. Then check that the quantities and versions remain what you intended. Clear one side if you want to rebuild only that offer.
Treat missing prices as a question
An unpriced skin or uncertain mutation does not become free because other items have values. Read its source notes. Avoid comparing a partial total with a fully priced bundle as if they have equal confidence.
Check usefulness as well as totals
Ask whether the received items fit your goal and whether you can store the duplicates in game. Similar totals do not guarantee similar demand, convenience or willingness from another trader. Confirm the final in-game window before accepting.
Common questions
Why can the percentage change when I swap sides?
The comparison uses a different starting total. A gain from 100 to 110 is 10%; reversing it is a loss of about 9.1%.
Does Clear all remove my Roblox items?
No. It clears the calculator offers on this website, not your Roblox inventory.
Sources and review
Original editorial guide. Community references consulted November 7, 2026; some indexed versions are several months old. Check recent changes in game. Examples and editorial advice are separate from documented rules.