Your honest opinion: how much is a 5-letter .com worth?

[babymaker]

what about good brandable paysite .com names i have a few i bought and just have crappy free sites on them i made along time ago, but would sell them to a big company if they wanted to develop them i will post a few lemme know what you think they may be worth?? am very curious...plus on a few i get who ised a lot i think someone might have tried to buy the names and who is'ed them to see contact info...i was contacted on one domain by a guy but he didnt want to offer and serious money even 500 or so so i just will keep them till i can make paysites unless someone at a sponsor can use them. they are all definetly typein's and brandable and niche specific but not one word.

www.nastycumsluts.com
www.cumfilledamateurs.com
www.nysexchat.com
www.whitewhore4blackcock.com <--was on offer money for
www.pregnantbadgirls.com

let me know if you think any of these would be worth at least $500+ or if you want them or best place to sell them if they are of any value.

just curious hope this wont be considered spam since i saw a few people askng about domains recently i am just wondering plus could use some $$$ lol