If you're in the US, Home Depot sells 1" wide VHB in small rolls for about $20. It's branded as Scotch Mount Extreme (or similar).
The tape industry has an interesting structure. Companies like Bron and 3M create giant webs of tape and put them on very wide rolls. These rolls are sold wholesale to "converters" which are companies that slice up the rolls into smaller rolls and different shapes for different applications. Most converters will work with you to make a custom roll of tape - some will even package it for retail - but a company like 3M has no interest in selling you 20 feet of VHB when they can sell 20,000sf to a company that will package and distribute.
The tape industry has an interesting structure. Companies like Bron and 3M create giant webs of tape and put them on very wide rolls. These rolls are sold wholesale to "converters" which are companies that slice up the rolls into smaller rolls and different shapes for different applications. Most converters will work with you to make a custom roll of tape - some will even package it for retail - but a company like 3M has no interest in selling you 20 feet of VHB when they can sell 20,000sf to a company that will package and distribute.
I love tape and I'm glad to see this post here.