I will say I was apprehensive about the mirror as it was priced low.  I am very happy with it so far.  If I get one full season out of the suction cup on the mirror I will call it a good buy.  I think it will last longer than that though as it appears to be of decent quality.  Not a large mirror but a good sized one for my needs.  I have a small jet boat and it works great for when I do not have an observer in the boat pulling the tube or skier.  I then take it off and store it when not in use.  No problems with it so far and I have used it on three weekends.