Truggy/Buggy advice

[Gee]

Looking to get a truggy and or maybe a buggie to run a brushless setup in. I've been trying to learn more about them. There are alot more out there then I thought. I did a quick search on e-bay and wondered what you opinion and advice concerning these I found.

ofna 9.5 pro the real deal no knock off ROLLER
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=011

Ofna Ultra MBX Buggy Rolling Chassis LX
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=015

Ofna Mutilator nice must see
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=011

Ofna hyper 7 pro TRUGGY Pro excellent condition!!
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWA:IT&ih=024

I don't know enough to know what a good price is vs a bad price. If they are sugar coating it or not. I read in one of the threads here you needed to watch out for a buggy that was converted to a truggy. That it would be a disappointment and a rip off to boot. So I appreciate you guys going to the car lot with me sort of speaking.