If it is yearly, it doesnt sound like it's worth it....but if it's a one-time fee...maybe.
I was lucky enough to get one of my sites in before they made you pay....I was stupid though and didn't give it a name that would go in the top of the category...I think that is VERY important....give it an AAA name...lol....or #1 Lesbians or such...I'm lucky if I get 1500 a month from that listing....but, I guess I can't complain....'cause it's free traffic for me.