What are the trade fees?
ArcBase charges a fee only on trades that include Credits. The fee is 10% of the Credits amount, rounded up, but no less than 1 Credit. The listing owner always pays the fee. Item barter and "Seeds" payments have no fee.

How is the fee calculated?
The site takes 10% of the Credits amount and rounds it up to a whole number. If the result is less than 1, the fee is 1 Credit. Examples:
2–10 Credits: a fee of 1 Credit;
11–20 Credits: a fee of 2 Credits;
21 Credits: a fee of 3 Credits;
100 Credits: a fee of 10 Credits;
101 Credits: a fee of 11 Credits.
Who pays the fee?
The listing owner pays the fee. The partner who started the trade pays exactly the amount stated in the contract.
"Sell" listing. The fee is deducted from the owner's payout. Example: the partner pays 21 Credits, the owner receives 18 Credits, and the fee is 3 Credits.
"Buy" listing. The fee is added to the owner's amount. Example: the owner pays 24 Credits, the partner receives 21 Credits, and the fee is 3 Credits.
Where do you see the fee?
When you create a listing, the fee is shown next to the Credits amount and on the "Summary" step. Click the "fee" icon to see the calculation.

When is the fee charged?
The fee is charged only when the trade is complete. The fee amount is fixed when the contract is sent. If the contract is declined, canceled, or expires, no fee is taken. In a "Buy" listing, the site reserves the amount together with the fee and returns it in full.
Do services have a fee?
Yes. Services are paid only in Credits, so every service trade has a fee. The calculation is the same: 10%, but no less than 1 Credit.
What is the minimum amount in Credits?
The minimum amount in Credits is 2. If you enter less, the site shows "A credits offer must be at least 2 credits". The maximum in one offer row is 1,000,000 Credits.
A trade without Credits, with only items or "Seeds", has no fee.