Instruct: Classify a review as either positive or negative.
Query: Why this thing has to be so expensive?

I found a pair of stretchable Velcro bands at Lowes for $4.97 and it does the job nicely. So compare the price: 2 for $4.97 or 2 for $30. If you are not sure if this works or not, just go to Lowes and get the stretchable and try it out.