Dual Halo projector lights... question

Dual Halo projector lights... question

Hi guys,

Sorry if this question or variations have been posted many times before....


What's the difference between the lights I can get off Ebay for about 100-150

and the more expensive ones from Ebay

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7912872964&category=33710

Or from racerwheel.com

http://www.racerwheel.com/rt100666.html

Thanks... I'm not afraid to spend $$$ but if I don't have to ....