Go straight to eBay or Crucial for your RAM, it'll be cheaper
And there's always the lovely
www.PriceWatch.com - gem of a site that is!
I do whatever is going to be cheaper for me *and* more convenient. Since I have two little ones, getting into the car and running up to the store is a major pain in the ass and takes much longer than a few minutes (plus the added stress and aggravation... "Put that down! Come back here!"). Quite often it's worth an extra $2 and 2 days' wait just to have it delivered to my door.
Now if only PeaPod.com serviced my area...
But those ebayers better have a Buy It Now button or they're not getting my business... when I want to buy something, I want to do it NOW, lol.
It might be a can of worms but most likely the States already have most (if not all) of the classifications in place and ready to slam down. Don't forget they've been fighting tooth and nail for this for years now - they've worked out to nearly the last penny just what each type of business (tangible, service, etc) should be charged and how much money they're going to get.