OfferUp 

An application used to sell items locally like a flea market

"Sell your old video games on OfferUp"
"Nah bro that apps got a lot of dirty lowballing cheapskates and douplicate posting scum"

OfferUp by Pulowski June 26, 2017

offerpal 

A pal or buddy that makes you an offer for something and it seems good, but they are actually just ripping you off.

My Offerpal just ripped me off!

offerpal by superbaddude October 1, 2009