1) Act as a middleman 2) Act as middleman 3) Act the middleman 4) Auction off anew 5) Auction over 6) Deal in secondhand goods 7) Deal in used goods 8) Deal secondhand 9) Find a new owner 10) Flip for a profit 11) Handle used merchandise 12) Hawk again 13) Hawk at a flea market 14) List on eBay 15) Make a new deal 
• (v. t.) To sell again; to sell what has been bought or sold; to retail.
Re·sell' transitive verb To sell again; to sell what has been bought or sold; to retail. 
[v] - sell (something) again after having bought it