Why is the full amount of bitcoin being transacted, part of the deposit when you are the “maker” of an offer for someone to sell bitcoin to you. Doesn’t make sense. As the maker of this offer, my responsibility is to send money, not to provide bitcoin. I understand the miner fee, and a “good faith” deposit amount, but the full amount? seems weird.
It probably means you selected the wrong type of offer, do not publish it.
You are actually offering to sell bitcoin yourself.
The correct path is: go to BUY BTC, then press CREATE NEW OFFER… button.