The Buy buttons will not be changed back into regular links, for the reasons I explained in the other post. The way they currently work is they're basically form submissions, so if the usual right-clicking/ctrl-clicking/etc does not work for you, you can try looking up "submit form in new tab" to find a way to do it on your browser.

I will work on making it possible to refresh to buy another one of the same item :)

A cart system could also be a viable way to resolve the issue of needing to buy multiple items from the same shop. If we want all special shops to have carts, it would come with some limitations (like a generous limit on the number of items in the cart, and perhaps auto-expiring the cart after 2 weeks or so) - but overall it could make things a lot more convenient. How would that sound as a compromise?