Stores and cash shop items

A rather curious question here.

If I was to place a tradeable cash shop item in a hired merchant on one of my characters, would I be able to buy it on another of my characters as a quick cash trade method?
Or is there something preventing this?

I don't feel like bothering my friends or guild mates every time I want to trade some items over

- Yes iirc, as long as someone else doesn't buy it first.