I have an older Wells Cargo Tote Wagon. Quoted new price is about 6,500 for the 7x17x7-1/2 like mine. Current comparable for used is about 4,600. That about what I paid several years ago. I have thought about selling, so did the research. Only problem is to get a smaller trailer would be trading dollars, and just reducing the space available. This one is light weight, so what's 300 lbs.
\
Basically, in this part of the world they are spendy.
If you are not going to use the trailer regularly consider renting. There are lots of smaller rental companies, not U-Haul that have daily, weekly, monthly rates. Average in my area seems to be about $20 per day, and have some flexibility. One company I used gave me a great rate on a 6x12 for two weeks, if I could wait until after Labor Day last year. Seems they have a back to school rush for the smaller trailers. I also used them to rent a stock trailer for moving some equipment. Was clear about what I was going to do, and they said I would have to pay for any blown tires. Great to work with owners, not managers. Figure your usage, cost the rentals and see if it works out. You have hit the prime time to sell, so the prices are going to be right up there.