What would you do with a sack full of Pro tanks? I really don't see any point in keeping them in a tub under the bed until I die and someone throws them in the trash.
Got around 20 tanks plus a bunch of airflow bases, glass, adapters, o-rings etc. Plus a few dozen coil heads with enough spare parts to rebuild them forever. I used to think maybe what if all my other tanks broke, but that won't happen in the real world.
Problem is I doubt many people would want to rebuild PT heads anymore. And even if you were willing to do that it's not the greatest vape. Guess I could put them up on classified for $1. Someone with a worse hoarding problem than me might go for it. Or keep them until China shuts the door and the vape market totally dies. They might be useful to someone then.
I'd put them on the classifieds. There's some people that still use the Protanks and might be interested in them. Whether you wait until the China ban or not is up to you.