There should be a list of reliable merchants for HDTV sales. I haven't made my first purchase yet, but I'm debating between a few... www.plasmabay.com www.newegg.com www.amazon.com www.overstock.com
Those are all reliable retailers.......I've ordered many things from all, except plasmabay. I have heard that they, are good retailers. Plasmabay has good prices on TV's. Make sure you understand their return policies.
I've bought a lot from these guys 5 to 6M http://www.globalcomputer.com If I've had a problem with something, they ship a new 1 right away. Also pick UP the the faulted 1. I have yet to pay return shipping Other good shops supermediastore ... DVD Media, ink etc meritline ... DVD Media, ink etc zipzoomfly ... HDD , Computer components newegg ... HDD , Computer components I've had excellent dealings with all of these I don't know how many different places U need listed, or exactly your needs are. But I've used a few others that sound kinda Quirky, and really never had a problem with anything on the so far to date
I've found this following site to be very helpful when trying to find out about on-line merchants. There are ratings and warnings about most common on-line sellers that will help you decide who you can trust (more or less). I use their ratings and customer feedback before I make any purchases on-line and have never had a problem. Follow this link : http://www.resellerratings.com/