^ that & also it depends on the rarity of the 1st press limited editions that they have on hand too
I was told that for KAT-TUN's DON'T U EVER STOP , because it had 3 limited editions for the single , its inital price that YesAsia was selling at was something like US$10 each
after a while , the price jacked up all the way to US$30 each @_@ & all 3 LEs still went outta print despite the crazy price(s)
so you have to be careful & act fast on this , especially if you want to secure something that's of 1st press quality