Custom Korg M3 - How much would You pay?

[AkselPL]

Helo
Probably i will sell my custom Korg M3-73. There is Radias on board, and both combi-set from karma-lab.
It looks like here:
https://www.youtube.com/watch?v=iAWPc1DWlck

and here is the latest modification with the carbon mask.

https://www.youtube.com/watch?v=5t1lBrISN2I

I tired to make backlight with sense so the I-F and U-F section is white because it is blocked for Radias, all function buttons have different colors etc.

What do You think, how much can i get?

Cheers!