I have had a subscription to Amazon Prime (currently $79/year); it entails free 2-day shipping, kindle loans, and streaming video.
If it all continues to work outside metropolitan areas this may be a real win.
There are two challenges:
Rural Addresses and PO Boxes.
Many companies, including Amazon, balk at seeing P.O. Box in the address line and require a physical address, even if the person cannot receive USPS mail there. I have read about a workaround which I am currently trying.
123 FM 456
Point, Tx 75472-0789
Note that the PO/P.O. is deleted and the PO Box number is given both on the 2nd address line and zero-padded after the zipcode. Testing it now and will review both the delivery and the products here on the blog.
The fasted internet feed I found was the 1-3mbps DSL feed from Verizon. I have tested Netflix down to 1mbps but not Amazon. Will report back what I find.