Ooznest vs Openbuilds WorkBee kit price diff - reason?

I'm new to CNC and have done a lot of reading/research. The ooznest workbee design seems very compelling from a price/performance perspective.

Currently, identical(?) configurations of the Workbee 1000x1000 kit from Ooznest and Openbuilds show a difference in price of about $300 with the Ooznest kit being the cheaper of the two.

Am I not appreciating a significant difference in the kits? They are both based on the same design and appear to have the same components.

thanks in advance,
Mark