There might be an argument to say that the evil fees are too high, and we should consider lowering them. I don't see any reason why someone should need to pay $20 or $30 to have the ability to post, and this is far above an amount that will deter the above described spammers.

The fees actually paid (by people who are presumably not spammers) may be a bit high, though: I feel like it should be about a tenth of that.