After 10 days CCEDK answered to my support ticket:
"You orders was executed exactly at these prices, which you've set. As we can see, your orders have been intercepted via api. For excluding such situations we advise you to be attentive during trading and making orders.
| Best Regards, CCEDK support."
So, when you'll want to buy 1000 FIMK for 100sat, and instead of "0.00000100" will type "100", you will make CCEDK 1000BTC richer, despite the fact that executed sell orders will have the prices around "0.00000099" - "0.00000101" (currect offers).