I bought a bunch of these a while ago and to be honest, I have only ever used them a couple times but that doesn't mean that you won't. I find that these work best with gaffed decks. If you want to be really ambitious, you could save the plastic wrap from a new deck, seal a gaffed deck, and put the wrap on, then everything would seem normal. Other than that, there isn't much use for them, but you may feel otherwise.

In my opinion it is so rare that one should need tabs like this... And actually, while being very careful you can peel efficiently the tabs off a new deck... (Etc... etc...)

Unless you repetitively need card tabs QUICK well don't buy this for nothing. Its a convincer which I don't care to use since it is A) Expensive B) most of my effects don't need extensive overprooving.