It’s not that expensive, $28 US for the MKS Rumba32. It does have some problems and there’s not a lot of support for it…yet. I’ve had a bear of a time trying to get various firmwares to run. Repetier V2 got it running except the heater kept halting the firmware, never got it printing. Got it running MK4duo but the printer would halt about 15 layers into a print because of a heater fault. Marlin 2.0 would print but I couldn’t level the bed, G29 would lock the printer. The latest Marlin 2.0 bugfix is finally working. I just got it running today, so the tuning/testing starts tomorrow.