"AutomationDirect.com
StepperOnline.com
CNC4U
PMDX
Warp9td
Buildyourowncnc.com

None of these websites seem to have a complete A-Z BOM of proven materials /builds that have actually been made except for the last one which is more expensive then CNCrouterparts.

https://rovercnc.com/products/roverc...dard-drive-kit

seems to be the only website that is half way as good as cnc router parts, but it doesn't even have a complete BOM of the pro level router they sell, only the beginner model.