grill cover

I recently picked up a used Weber Performer, and now need a cover. I checked out Weber [directly], but I have no desire to spend $80. I found King Kong covers on Amazon and wanted to know if anyone has had any experience with them? Here is the link -...

As the title states, I'm in the process of recovering an early 2000s model Genesis 3 burner and currently picking out replacement parts... Curious if anyone had suggestions for a grill cover. I'm debating to just go generic from Amazon as they seem to be roughly half the price of the Weber...