I moved to a new place and don't have covered parking anymore. I want to buy a car cover for my tC to keep it clean. I looked at them online and find covers range from $30 to $300.

I know it is I-get-what-I-pay. But jsut want to check if there are any horror stories with cheap $30 car covers... did they scratch car paint? did they become permanent part of the car/paint after under the sun whole week? anything?