[meta] What would it take to get a reddit ad for our sub?

I was playing around with the idea of how cool it would be if r/neopets could get an ad going on reddit. I even threw together some sample ads. I can't be the only one who loves to see new faces and returning Neopets users on the sub and this could be a win-win for everyone involved.

I'm sure this would cost money so how would this work? If enough of us wanted it, would we pitch in? Other subs I've been on have had banner contests for their ads and that sounds fun. Would it even be worth the investment?

What does u/diceroll123 think?