I've written a blog post about selling my eBook to buyers using Bitcoin - warning: I am no expert and have not sold a single book this way, so this is not a "How To" kind of thing.
Here's the post -
http://brettfitzpatrick.com/post/027_15_08_2017_selling_my_sci-fi_novel_Galaxy_Dog_for_Bitcoins/The gist of it, for those disinclined to follow the link, is that I've decided to use Mycelium Gear to sell the book through my site. There's even a widget right there on the page with a "Pay with Bitcoin" button.
I think it's pretty neat, but I am no expert. I have mined a few Gridcoin but I don't own any Bitcoin: at least not yet. If people want to read Galaxy Dog, and they are willing to pay Bitcoin, I soon will.
Thank's for your attention.