Welcome. I posted an update a couple of days ago that provides a correction to the code so that SBD calculates the payment amount based on it’s real value at checkout and so that you can import a Steem logo into your checkout as well. Check out that post before you build your store.
Let me know if you build something for your photo prints!
Ah, thanks for that update! I've followed you to not miss your progress anymore :-) I'll drop a link if I have a functional shop, thanks!
Awesome! Thanks.