Answer: bidup

AnswerCrossword Clue
BIDUPRaise the cost of
BIDUPMake a lot costlier
BIDUPDo a shill's job
BIDUPMake pricier, in a way
BIDUPIncrease, in a way
BIDUPRaise the price of, perhaps
BIDUPRaise in the auction
BIDUPIncrease the price of, at an auction
BIDUPRaise in price by successive offers
BIDUPRaise the price of, on eBay
BIDUPCause to rise, as a price on eBay
BIDUPIncrease the price of at auction
BIDUPRaise the ante
BIDUPWhat shills do at auctions
BIDUPMake the price higher.
BIDUPRaise, in a card game.
BIDUPMake pricier at auctions
BIDUPSteepen, in a way
BIDUPTake action at an auction
BIDUPMake more expensive, as on eBay
BIDUPCause an auction price to rise
BIDUPRaise the price of, at an auction
BIDUPIncrease the price of, at auction
BIDUPIncrease, as market price