About two months ago I Purchased ( Financed) a 2012 Trailmanor camper Mini 19RD.. Its a pretty nice camper however I think I like to have something a little bigger.
Option 1: Tough it out until next year as you might be in better shape financially with the loan. That will have to be balanced off against depreciation.
Option 2: Not always feasible but if you add some cash you might be able to keep loan payments the same.
Option 3: Sell privately as you'll get more money. Hopefully this would be enough to pay off your loan with some cash left over. Wait until next spring to buy again. Take the money you'd be spending on loan payments and put them in the bank to use as a down payment.
Reassess to see if it's a matter of size, layout or style before you make any decisions.