A spice merchant.
auctioner
A confectioner.
Draper
A hotdog vendor
Ironmonger.
A hatter
It's an old term, probably obsolete by now, but someone who sells fabric is called a mercer.
clothier
Daniel Studley.
An agent or representative.
A confectioner is someone who makes and sells candies and sweets. A chocolatier is someone who specifically makes and sells chocolate.
locksmith