I spent 4 hours looking on the web for a camcorder. In reality most of this time I was reading reviews about resellers. Until I found this PC World article: Web buyer beware. And all the research ended.
Now I know why those websites sell products with hundreds of dollars below the retail price. Now I also know for sure that I will stick only with the merchants that are well-known (Amazon, Circuit-City etc). I'll have to pay more but at least the risk is much lower.
I learned once again that nothing in life comes "for free".