"a big chunk of your time is spent calibrating and tweaking instead of just waiting for a print to finish."
I dunno, my (Genuine) Prusa i3 mk3 chucks out flawless PLA prints time after time, without mucking around re-calibrating. It's definately a "domestic" level 3D printer (built from a kit).
I could have bought at least 3 El-cheapo chinese knock-off kits for the same money, but didn't, due to not wanting to have to recalibrate the thing the whole time.
https://twitter.com/josefprusa/status/949258037411373056