I bought a roll from the site that i got my heat tape from, and it was LOUSY! I think staples or nails which ever you perfer hold nicely, might take a few extra minutes but you dont have to worry about the containers rubbing the foil tape up and making it hard to move them in and out. That was what i ran into on my first rack.
Agreed on the staples, but option B is there too is my point. Not everyone can get a staple gun into their rack or has a staple gun. Lowes sells the tape at $7? for 100 feet and the expensive stuff was around $14?