I see some levelers in the $50+ range and wanted to share a quick option you may find better.
There's a free design here that you can have someone 3d print that accommodates laser, leveling feet, and bubble level:
https://www.thingiverse.com/thing:4975645
I posted to Reddit requesting a print and [email protected] did it for me for an extremely reasonable price shipped. I already the leveling feet, alignment stick, and bubble level already and I was all-in for well under $20 (I didn't bother with the laser).
Note this is just for the printing, not assembly, but the other components are quite cheap.
