Car Cover Recommendation?
 

My Mercedes is currently outside and exposed to the elements now, I can't seem to find a nearby garage storage, so I'm looking into a car cover. The car would be outside under a tree, or just in the open covered. I'm looking for one under $100, there seem to be ones on eBay for 40, and $60 dollars. Covercraft makes one for around $60 as well. I would also get a lock and cable set so someone won't take the cover as easily. Has anyone had experience with the eBay covers, or covercraft, or can recommend a decent one?