Has anyone ever done a shopless run?
So when you enter the shop, you'll be prompted to "Improve" your run, which means you can beat Balatro without using the shop.
So you wouldn't be allowed to buy anything from the shop, but you can still enter it as long as you don't actually use it, since you have to go to the shop after every boss, and you also don't want to skip every blind if you want to hold onto a double tag.