Hi Cavey That is really cheap as it worth more than that Buy them a cartoon as well
I have 1 and luv it It sit beside the pool and is set between 36-37 degrees One thing I would recommend is to buy 2 packs off white batts white has no itch not yellow and line the inside of the cab to insulate This will help your electricity bill.
If poss try to put it outside as the pins wont like condensation also we sit in at night a look for space junk -- satellites there is a lot out there
There is not much better than a beer at night or a cuppa in the morning while having a spa Enjoy Howzat