I bought my curve through them (before my storm) and had no problems whatsoever. I wish I had waited to get it through them - that's so much cheaper! *But, I was on of "those" that was there at 5am on launch day so I can't complain*
I would refrain from buying anything where the main part of the domain "Claiming" to be Wal-Mart is "letstalk.com" sounds like a great way to take some suckers for a ride !!
Letstalk is actually a legit site. I've ordered through them before, and one of the owners is also an editor at phonedog.com (which is also legit, for those who have no experience with that site either). I can't blame you for being cautious, but no worries with them.
Posted from my CrackBerry at wapforums.crackberry.com