Replacing Isotherm 85L Fridge in Four Wheel Camper Raven

[Cvonruex]

Unfortunately, the 85L isotherm fridge in my recently purchased FWC Raven is unfixable. Does anyone have a used one they're willing to sell or a suggestion for an alternative that isn't as expensive as the $1600 price tag FWC charges for these?

so grateful for any help this community can give!