Thanks for the links Mt Spokane Photography. And I can understand how you might think my first post was to pump my own site. I'm not connected to them in any way other than I bought the lens from them through Adorama, it was delivered before the estimated date & no incorrect charges were on my card. I wanted to let others know they might save some money on 'price fixed items'. When dealers don't offer discounts on these items, or offer bonus points & charge sales tax, a online site helps. So on the $2k lens that is $160 in tax, plus the 40k in points which amounts to $400 toward something else, which nets me $560.
The Toms Hardware posts was last updated in 2010 and the complaints I read from consumer affairs site are due to most of the customers own fault. Many on them were complaints about delivery issues when the billing and shipping address was not the same. Or some had complaints about a 3rd party vendor no one has heard of. Yes I agree, read the fine print and suggest you buy from name vendors.
For what I was talking about, buying a Canon body or lens, the 3rd parties were authorized well known dealers and the bonus points can save people money on future orders. I've used bonus points from buy.com before and never had an issue.