As a merchant, I'm thrilled.
My dad is a wholesale trader.
He told me that he was a shopkeeper, but I found out that he was actually a poor homeless man who supported himself by collecting empty cans.
A merchandise person is a merchant. You want to buy something or you just looking?
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.