So I guess this is far worse than a simple 3rd party payment solution like bitpay or coingate..
First, you have to install a browser extension....seriously?
Then you pay coins for the invoice and an undisclosed partner ill take care of the conversion...
At this point, it is possible Amazon has no clue what the guys from Moon are doing and they might shut it down at any time.
If they would have done it through a normal 3rd party like the ones I've mentioned I would have said it's a step forward but this thing is shady, and not just that