An A&M Records/music website was my first online-main hangout so anytime anything was a CD reissue (mist often Japanese) Amazon wa the place to order, among a number of music marketplace networks for vinyl, as well as sometimes other CD discoveries, when I surprisingly wouldn't order or look for it off of Amazon, perhaps due to better pricing or just availability issues...
So in the chief regard to Amazon, I think the majority of my ordering-buying from it has been mostly good, which in recent times, we've passed the torch from myself being the main consumer to now my daughter, getting so much off of there throughout the year, and again, ranging from satisfactory to way above excellent, we just plainly don't know what to buy her for Christmas....
Amazon seems to have come far in going from only offering music items to photography, to as we've seen just about everything and as for certified carriers, those vans are seen just about everyepwhere, uniformed drivers, and all, as in having what's equivalent to owning its own UPS...
So, I see no reason to express any disdain in any case for them, just what's mostly praise, outside of my ordering whatever product comes off of what I use, but mostly eBay and a couple other music market networks, also to varying degrees...
-- Dave