I am looking to buy Thermo King S-700 - cash in hands

I have cash in hands, looking for a 53 Reefer trailer, swing doors and TK S-700 with less than 10k hours on the engine. I will agree on SB-320 too, but I don't think I can find one in low hours and good condition. Thanks for reading.

 

Prime Inc, has many reefers. 2018 utility with brand new TK S-700 offered for $55k. 2017 utility with brand new TK S-700 $50k. I don't know why they are putting new engines on these trailers. What happened to the original engine, installed when new?

There are some 2016 with low hours (7-8 000) in the truck paper, also.

Is 2016 too old ? Can broker refuse to load me?

 

Finally I have got 2017 Utility with brand new Thermo King engine on 7 hours (5 years warranty or 10k hours), disc brakes, 8 new virgin tires, auto inflation system for $48k cash.