Nextcloud on a Intel NUC with Celeron

Raspberry 75
PSU 10
Case 15
256 GB SD 30

Is far away from 200

But i agree what you stated.
My Fujitsu Q920 is running with an Core i5 4590T CPU, 8 GB RAM and a 256 GB SSD. This you can get currently for approx 200 and it’s a better solution than any raspberry