Have you thought about getting one of the 6040 routers off Ebay that come from Portsmouth for about £1200 and ditching the control box.

220V CNC 6040Z-S65J upgrade from 6040Z+S Engraver with 800W 24000RPM spindle | eBay

Just as an example.
A new control box will cost you around £250 to £300 with quality components.