Do they sell refrigerators for semis there

I believe they do

Yes

I agree most likely the thermoelectric type. With this heat though it might struggle to keep temp. I use a regular mini fridge from target or Walmart. I've had good luck with them lasting over a year maybe 2, they aren't really built for the buttery smoothness of our roads , so they have limited lifespans. But for the price and they work even if the truck is frying inside I like it better than the OE fridge over 1k from volvo. Mine is running on a TK 1800 watt inverter no issues . Kills the batteries though if it's not on shore power over a weekend.

I believe so

Sometimes. Most of the time, they have those thermoelectric coolers in stock. Maybe try the T/A and Petro on the other side of the hill. I was just there this week and saw coolers and refrigerators.

No