Sparky,
I'm not quite sure what you mean by “marketability”. Or specifically which tools you’re referring to. But generally speaking anyone can sell whatever they want. It’s kind of like you can still purchase attachment plugs with the cardboard or plastic wafer as opposed to the dead front types although the wafer types are no longer listed by UL nor are they acceptable by NEC. Be sure the tools you are looking at are UL listed, and if they are dielectric / insulated type be sure they meet the ASTM standard for insulated tools. Let the buyer beware !
OSHA Professor
