I no longer give price appraisals. However, I think that WholesaleJet.com and webseorank.com are the only winners of these 4. webseorank may not be the best, but I think it may be worth holding onto if you actively seek a buyer only because, from my experience in wanting to hand reg a decent SEO .com, they seem to be very hard to come by.
Wholesalejet.com is a great brand name for a wholesale site. I would hold onto that one and put a nice for sale landing page on it if I were you. I would not take less tan mid X,XXX for that, but I think that may even be low.