Ugh, I hope you have your original purchase invoice and service records, so you can prove the machine is worth as much as when you bought it. We got a printer in 2011, hp l25500, and a fire in 2018 which wrecked the printer with smoke damage. Filed with insurance and the coverage was for the closest equivalent, at the time it was a hp 365, which was more than the new price when we got the l25500. We added a little on top and came out with a 560. It helped that I had a statement from a local guy declining to disassemble and clean the machine, and a quote from a tech with a print company for 5 days on site teardown and cleaning. Both wrote clearly that the printer would never be 100% again. All in, it was a pleasant experience.
Oh, and same thing on the plotter, purely from smoke damage, they covered the cost of the graphtec fc series at new purchased price.
I guess I paid in the end when they totaled my truck and paid 3/4 of the cost to replace.