On first impressions I really like Host-envy.org (sounds like a great name for a webhosting comparison site!) but I guess the value has to come down against the .com equivelent - still $50-70?
efoxmedia.com sounds like a great typo for the evil media corporation Fox media - but then Fox has fox.com rather than foxmedia.com $20-40 ?
uscreditcardunion.com I'm sure would be of use to a CC company but it would have to be pretty specialised - could be worth lots of money but without a specific buyer resale value might be $50-100?