The Chinese crank out freezers and or refrigerators 7 cu ft for $200 Sams Club, very efficient and quiet. I run two of them off a Honda
2000ei with the full sized washing
machine going and two large fans and the unit is idling. We've been living full time on our boat three years now in the tropics and are happy with the system, we can move around with months worth of food
I saw one unit in David, Panama
the was a combo for $250.
Most of the boats down here are sailboats that have tiny units that cost thousands of dollars and break down all the time. Can't tell you how many times they have come over to use our freezers to save their food