Gdetrailer wrote:
toedtoes wrote:
korbe wrote:
Is the trip to site see the country? To live in one place for a job?
I would buy the cheapest used trailer that fit our needs after seeing what does and doesn't work. Put some new tires on it and take off.
Sell it when you get home.
x2.
You can find an inexpensive used trailer well below your $20-30K max. I would recommend the new tires and an initial recaulking of all seams/windows/vents.

Buying a old trailer PLUS putting time and parts like tires into it IS going to be very costly.
Then the OP would most likely NEED to buy a WD hitch (typically those do not come with even a used trailer).. Then the OP will need to outfit the trailer..
By the time they get done for a 6 month trip they will have spent more money than if they RENTED a trailer.
Then on top of that attempt to resell the trailer.. Market is flooded with used units, most likely will take a lot of time and effort to unload it and even then they will most likely sell it for a heck of a lot less than all the money they put into it.
The OP's question isn't "should we get a trailer", it is "how can we minimize the loss of money when we buy a trailer for a single 6-month trip". For that answer, buying used, putting some cash into it, and then selling it for near what they paid is the better option than buying new.
The OP has already indicated that renting a trailer is not a viable option for them.
While it may not be YOUR choice (to buy a trailer for a single trip), it can be done without losing a whole lot of money.