Are campers like motorcycles and other items and go down in price during winter?
Yes they do, BUT, you only have a short window of opportunity (between now and October) to buy one. After that most people will put their camper in storage and forget about it until spring. Best time to buy is late winter/early spring.
"The French soldiers are grand. They are grand. There is no other word to express it." - Arthur Conan Doyle, A visit to three fronts (1916)