Bad products isn't the fault of the shop selling them, it's the fault of the company or your own choices. There's a lot of crap out there I wish shops wouldn't sell, but alas they do because people are still dumb enough to buy it.
Scan have been relatively efficient with their RMA process, not as quick as the now top-grade ebuyer (agreed on their service earlier, but I'd say it was closer to 4 years ago it was really problematic), but then unlike ebuyer my last RMA didn't go wrong. Both RMAs had their addresses changed - Scan accepted it, ebuyer "forgot" in their own words, but still, I'm not going to judge them because I only have the word of a third party processing my return to go on, as he bought the item not me. I am very pressing with companies when things don't go to plan, so had i been submitting a direct return myself, it might have been different.
I thought I might add that I spotted Scan claiming 'the industry average for failed components is less than 1% - it is mostly user error' or something to this regard.
I
LOL'ED. Different figures in different markets, but I'd say dead within 2 weeks/ DOA products must be at least 6-8% and faulty within warrant period products would be around 40%, based on the hundred or so PC components I've purchased over the years.