Excellent selections. Excellent Service. Amazon has made our providing computer services a whole lot easier over the last few years. I'd have to honest say that They are cheapest 90 - 95% of the time we price shop.
Better yet, we are PRIME customers. For only $69.00 (or so) a year, we get free 2nd say shipping or for $3.99 get overnight shipping. Regardless the size or weight. We are probably placing 10-15 orders per week, and to be frank, I know they are losing money on us when it comes to the PRIME account. But they have no limit.
As far a 3rd party purchases, I have on occasion had a problem with the 3rd party vendor. In every case it only took 1 email to Amazon and I got a refund within hours.
As far as the reviewer complaining about Amazon selling so much more than books... that really is a silly complaint. If you are searching, you can specify to ONLY search books. Come on, if it bothers you that much, then go buy your books at Barnes and Noble... and pay more. In our case, about 98% or all purchases are NOT books.
Seriously, what's NOT to like about Amazon.
On a scale of 1 to 10, they are a clear 10 for me and our business.