Have not seen this on a Ducati, but I would look to buy the upper bezel with the clear lenses. Maybe someone has a gauge cluster that is burned up (electrically, not physically) or suffered crash damage to the lower (expensive) parts.
If you have other bikes and are not time-sensitive, watch eBay. You might get lucky who knows?
I have taken old Suzuki instrument lenses from completely frosted over to near-new, using sandpaper. Start around 220-320, take off the yellowed plastic. Wet sand (water), go easy...you don't need to remove much, and every deep scratch you put in with 220 will take a lot of time to remove with 400, and a lifetime more working up to 2400.
Work your way a step at a time up to 2400 or 3600 grit, then polishing compound, then wax. There is a kit/product called MicroMesh, used for light aircraft Perspex windscreens. It won't include the 220-320-400-600, but will include the finer grits and polishing compound...and you can buy the coarser at NAPA/Home Depot. etc.
Failing that, I believe I saw a thread where someone did a DIY on carving out the old lenses (carefully) with a Dremel, buying some Perspex, forming new lenses and installing them into the original bezel.
Given the Ducati's immobilizer, more than a few people have explored options other than paying $1600+ for a new set of instruments, ECU, etc.
Please let us know what you decide, and how it works out. Others will benefit from your experience.
Best regards, Rich