I've had an Engel MT45 with a Two-Zone top on it for over 20 years now. You can put the Engel to full freeze and the top Two-Zone compartment will stay at refrigerator temperatures. I cut a piece of Plexiglas that separates the compartments. For long outings ice isn't a problem. I also carry a...
They were about 2800 yen when new. I should have bought them then. 51,000 yen for one now is insane.
I did order a ceramic one for my home off of eBay. Don't really want to take it on the road though.
Thank you for looking.