https://techblog.bozho.net/gdpr-practical-guide-developers/
The penalty isn't meant to be something you afford. It's a penalty. (It's a feature, not a bug.) I'm having a really hard time not being sarcastic right now but compliance with the law might also end up being an economical option worth looking into. Cheaper than lawyering-up for being sued by shysters for non-compliance, and cheaper than being penalized for non-compliance.
Mind you, taking whatever-it-is off the internet is fine too. I totally understand. What I don't like is all the whiny sanctimony and martyrdom. "Yes I'm taking my thing off the internet, but first I'm going to make a big deal about what a tragedy it is for the world." Um no. The fact that your thing is a "small business" means few people care about it. (Sad to say. More people care about Facebook than about you. That's why they're the big incumbent.) And it emphatically doesn't mean for example, that you're some hallowed, heroic underdog who deserves protection, especially when you won't even afford the same to your own users and their data.