I don't like to share my Account Details with Google. It would be nice if you could offer a direct payment (Threema also offers this) or payment with the Amazon Store.

I know that there is also a "question" thread but I like to open it as Feature Request to see how many also need this feature. As far as Solid Explorer can only be bought on GP I will not be your paying customer ;)

Reasons for an alternative payment option:

Google haters will love it
Kindle devices dont use Google Play
Amazon gift cards can be used for it
The dev gets independent from Google
lower fees for direct payments
More potential customers
My personal reason is that I already have an Amazon Account and don't want to give my