You may get people if you remove the 0.01 deposit requirement and use escrow or pay directly to people's address
Why don't you say:" Give me money then I will trust you"?
PS: we do pay directly to people's address.
You don't get the simplest facts, one of them being that when you want to hire someone to do a job you have to provide the funds not him.
You want people to wear signatures, you need to pay them, not expect them to send you money first. With such attitude you not only won't get people to advertise but will probably run your business into the ground.