I just put a Ruched White Top in my shop, priced it and put in my pin, and it didn't work. o.O It still says it cost 0 sp... Whats up with that?

Remove the pin option for the shop items and try again? Seems that it's glitched at the moment for some reason.

Yay, that worked!^^ Thank you.

No problem. :) You can always re-enable the pin option for the shops if you're worried that something might happen.