Saas show car cover/ autotechnica show car covers are really nice and between the 100-150 price point depending on size.
Both brands also carry a higher quality version.
Autotechnica have a concourse cover that is a tpu like material.
Saas have the 'ultra' indoor car cover, that is the super stretchy material that will tightly fit the car.
The first two you should be able to find on the shop floor at most auto stores, the second two are generally special order in items.