Well, I thought I'd seen it all, but this one takes the cake. It's an anthology call where there is no payment except a copy but you have to pay a $15 fee to submit your story. Oh, and to "further support _____ Publishing and to ensure you receive a copy when it comes out" you should use the $20 fee button to submit. And guess what - there's no guarantee that your story will be included for that handsome fee of $20.
Some publishing houses have really large brass balls.