One of my favorite trailers, looked at a few but never worked out.
Axles will need to be replaced, batteries, tires, etc. Check the floor for rot, front to rear and inside hatches and under the bed if possible. Test all the appliances, the refer will take a day to get to temp but try on shore and propane if time allows, water heater, ac, etc.
If generaly in good shape and price is fair go for it but do expect some repair costs.
Good judgment comes from experience, and a lot of that comes from bad judgment.