Sportsman vs Travel Villa

As far as I can see, these campers are no longer mase.

According to this list, Travel Villa no longer exists.
http://www.rvadvice.com/rvmfgs/TC.html

Sportsmen no longer make truck campers, here is their current website:
https://www.kz-rv.com/shop-by-brand/

I have no idea what the last years for truck campers for either manufacturer were.

Depending on how old the campers are that you are looking at, it matters more in what shape they are today than how good they were when new.