Winter time is the best time to look for trailers. Look at gently used trailers a couple of years old for the best bank for your buck. Look for quality manufacturers and go a little older if you need to so you can afford one that is well made.
Never believe what an rv sales person tells you, especially when it comes to the weight a tow vehicle can tow. Many will say anything to make the sale.
Be prepared to travel to find the one that will work for you.
Since you have decided on a trailer, I would go the trailer forum and do a lot of reading. You need to learn how to calculate what a vehicle can tow. You have the weight of the trailer, the weight of the trailer contents (including water if you have water in the tank), and the weight of the occupants of the truck and the truck contents. Do not tow right at the limits of your tow vehicle.
Get a weight leveling hitch with sway control. Those hitches make a big difference in how the trailer tows and make towing much safer. I do not know what vehicle you have to tow with but if you do not want to change the vehicle, it will determine what trailer you can purchase.
Read the past posts on the Trailer forum to see what brands are working well for people.
Take your time and purchase the right trailer the first time. It is expensive to change the RV you have,
Nancy
Newmar Northern Star