Right now it doesn't make sense to buy most items from PUS.
I think people would buy more items if it made sense to buy them.
You should balance PUS prices with in-game prices.
Who buys medal of puzzle or csw+3 for 400 kc?
elf belt 200 kc? myth set 500 kc? eagle eye 200 kc? hell breaker 300 kc?
The list goes on forever
Now I think there are around 5 items that make sense to buy from PUS.
I think people would buy more if you fixed the prices
