RV Covers Experiences

Does anyone use a cover on their RV? We will be parking our RV on our drive and thought that it might be a good idea to buy a RV cover.
I've looked on Hex Auto Parts website and they do one with a zipped opening for the door, which appears to be the best value. I recently moved from US to Canada and if Hex Auto won't ship it I probably ask a friend who live in TX post it to me,or can I buy one here in Canada?