Apologies for going slightly off topic, but it's important.

(1) If your business takes off (let's say 50K revenue), you'll light up on an Amazon dashboard and they'll import and offer the same stuff, undercut you and take over your business. Stay small, and you'll be fine... but...

(2) Increasing EU/UK regulation will eventually overwhelm you, which is exactly the point in the bigger agenda of destroying small entrepreneurs.

@captjack is correct in advising the Nostr route, where nobody can block or close down your business because you did not submit some stupid form before a deadline.