@TheWarOnCars Thought about buying it, but

> Ebooks from Bookshop.org must be read on either our Apple or Android app, or via a web browser, with the exception of DRM-free titles that can be downloaded and transferred to your reader app or device of choice.

That's unfortunate, as DRM'd ebooks are everything but sustainable – you are only able to read them as long as the company is willing to provide the infrastructure.
Not your fault, but worth knowing for potential buyers.