I think you just had a bad first experience man.
I spend a shit ton of money on Amazon. In 2010 we bought 90% of my childrens Christmas, lots of Car Audio stuff, Parts for my Yukon, 4 Kinetik batteries, etc. All have been excellent transactions and the prices are usually the best I have found.
That said I didnt get my 2 PS3's for $39.99 each Damn it! lol