Unfortunately, k has suffered more than almost any other drug in the past 5 years (18 months specifically).
The arrest of a certain gang who were supplying a significant proportion of the k in the south of england, combined with increasing demand and an easy product to cut has meant that along with all the other things that have affected drug prices (exchange rates, changing border control, changing legislation in source countries), the price of k has rocketed. Wholesale prices are basically double what they were 2 years ago and it's a fucking nightmare trying to track down real k, there soooo much crap about (tiletamine, MXE etc) and I swear that loads of the stuff that actually is k is almost exclusively r-isomer.
Rant over