At least in Germany you get a Smartphone for way less than 100€ and a call + SMS + 4GB data flat for 5€.
If that is luxury what is going to the cinema for 20€ (movie and popcorn) for 2 hours?
More expensive ones are not significantly better, either, unless you pick a brand known for keeping up with security updates.
Recently moved and didn't have internet service setup yet. I got an unlimited data bundle from them for £17 for 30 days. Felt like a pretty good deal, and it didn't get throttled at all. Latency was a slight issue with zoom calls though.
I get 15gb for 10€ from them.