"LAfirms.com" ... some type of "Business Directory" or "Search Engine" for those businesses (sure to be TONS of 'em). This is the *best bet* here, as I see it ... $22.50 - $40+, IMHO.
Others are Reg. fee's+ ... "dnsjet.com" could prove a fun and rewarding development project.
Good Luck here.
You'll definately get more bang fo your buck if they were developed somewhat before you sell. I really like the lafirms.com, but don't see any value in just the name. Good luck!
0zm.com - Hard to appraise, maybe $20
backroutes.com - I don't see any uses, reg fee
dnsjet.com - Good if you can find an end user, but not that great otherwise. $15
LAfirms.com - Loads of potential, $50 undeveloped, hundreds developed