Stolen from the KTOS thread:
*youtube.com/watch?v=krQcgE1UWpg
*explained in the comment section of the vid
So about 14-15k per scroll depending on seller. Could be more. Either way, not viable. Thankfully.
The only thing I particularly see is if some areas are so polluted, that the Enchanter themselves grind by using both JP and HK plus JP and HK scrolls to multi link different mobs and improve grinding potentials. Ofcourse, it’d cost them some moolah to do this, but it’s also much less costly for the Enchanter themselves.
I am looking forward to party with anyone who say JP scroll is so cheap to buy and willing to spam for party use. 
22s reduce 15k from your wallet. Hmm… great.
It’s only a way to help people in dungeons when no Linkers are in your party, or ti simplify the grind when you are alone. It doesn’t mean people will kick your butt just because you are a Linker -_-