Sherpamatic 43 Value?

[NorCalPC]

I've got a Sherpamatic 43 which looks to be in fine condition. It's missing 4 of the ink cartridges, but otherwise appears complete.

I'm looking for fair market value estimates, as I'd like to sell it. I bought it at auction hoping to use it for plotting / large scale printing, but it appears pretty tough to get windows drivers for it.

Any insight you can offer would be greatly appreciated. It's in northern CA.