Not by much, granted, but all vendors suddenly upped their prices a little. It's obviously a percentage since the numbers are very uneven.
The only thing I can think of that might be connected in any way is the tiny quoin multiplier I picked up earlier, as it's also using a percentage (and I can't see any actual increase in my quoins, but it might be too minute to matter). Doesn't seem likely, though.
Seriously, though. Did I piss off the vendor association or something? >_>;