I guess it's good for distribution. I live in Australia and I'm more inclined to purchase these books since I get free international shipping via Prime.
But being the _only_ distribution channel? Probably not the best!
It's not even available on the international Amazon websites. If you want the physical book, the only option seems to be to pay the extra shipping costs and import taxes to get it shipped from the US. Hopefully this is just temporary.
Seems to be available on the Australian site (albeit shipped from the US). I usually just find something else to buy to reach the $49 free shipping threshold.
This is still the case for many of the stripe press books I would like to purchase. Not available in Canada so looking at very expensive shipping and import duties.
Surely you mean that if it were not on Amazon, then you would have written it off. The subjunctive mood is important when considering counterfactual possibilities.
But being the _only_ distribution channel? Probably not the best!