gazump - raise the price of something after agreeing on a lower price

cozen - cheat or trick; "He cozened the money out of the old man"

fleece, gazump, overcharge, plume, rob, soak, surcharge, hook, pluck - rip off; ask an unreasonable price

bunco, con, defraud, diddle, goldbrick, gyp, mulct, nobble, rook, scam, swindle, victimize - deprive of by deceit; "He swindled me out of my inheritance"; "She defrauded the customers who trusted her"; "the cashier gypped me when he gave me too little change"

bilk - cheat somebody out of what is due, especially money

bunk, beat - avoid paying; "beat the subway fare"

whipsaw - victimize, especially in gambling or negotiations

welsh - cheat by avoiding payment of a gambling debt

victimise, victimize - make a victim of; "I was victimized by this con-man"

beguile, hoodwink, juggle - influence by slyness