I've bought from Amazon on several occasions. Never had an issue with them being unable to ship something, although I've pretty much only ordered books.

The one annoying thing about them is the digital downloads. I tried to order the soundtrack for Supernatural however it was not available for download in my region It's all good though; there are other methods and Amazon missed out on getting my money.

It's been about 6-8 months since my last order so I can't recall what shipping method they used. Sorry.

One thing to keep in mind too is that just because you're ordering from Amazon doesn't mean you get it from Amazon. They literally have 100's of supply chains.