As title: Mercedes w124 500E 300E E320 Waeco BordBar rear seat armrest refrigerator RARE | eBay As rare as is made out? Andy
It is extremely rare but its damaged and not working... If it was in Europe it would be worth the price but importing it here will add a lot of duty and postage.
Just get a fridge from a w126 and fit it in to the w124, more accessible and miles cheaper. Installation will take a few hours though, this is a proper fridge, not the gimmick front console one on the w124. talbir