Answer:

reseller

Answer	Crossword Clue
RESELLER	Middleman
RESELLER	Secondhand-shop owner
RESELLER	Online retailer, perhaps

RESELLER	Antique shop clerk, e.g.
RESELLER	Thrift store, perhaps

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.