Cofair QR616 Aluminum 3"X16' Quick Roof Tape

I can't talk about the price, maybe Quickroof can be gotten cheaper elsewhere. As far as the product itself, the "home improvement store where they wear orange aprons" has never heard of the product; it is not in their computer. HOWEVER. If you look in their "roofing" section you might find it anyway. I've gone to five home-improvement stores in San Diego, two of them had the product, none of their employees were aware of it.
That said, this stuff is functionally identical to Dynomat, the stuff used in cars to attenuate road noise. I bought six rolls of this stuff and put it in the trunk, inside the doors, under the carpet, etc. It makes the car sound more like a bank vault. This stuff is way cheaper than dynomat.

I selected 3 stars because I just installed this product today and have yet to find out if it works or not. I had to comment, however, that the $70 list price is absurd. I bought a 25' roll at a big box home improvement store (the one where the employees wear orange aprons) for under $20...appears to be the same thing. So you are not saving a ridiculous amount of $$$ to buy this on Amazon.

It appeared to work OK, but I have to admit that this was used as a band-aid on the very decaying wood above my gutters. I figure it will buy me a couple of months of peace-of-mind knowing that water is no longer splashing off my roof, into my gutters and then back under the shingles to cause more rot. Perhaps it will save my facia until I get the roof replaced.

After installing I started to worry about the adhesive attracting cockroaches...will update my review for sure if that happens!