Hello. I can explain.
Payeer has corporate bank account in Europe, Prague. That mean, when any bank send transfer to non EU countries - International central bank (your bank correspondent) can get comission TOO from 15$ to 30$ USD. This fee on your side (your bank work with bank correspondent). We send from Payeer 100% correct amount and pay all fees on our side.
This payment method in Wire's called: Shared - We pay all comissions in our side, and receiver pay own fees on his side.
Small amount - not good idea to send International Wire Transfer. It's good from 1000$ USD