I came up with this concept last year.
Bid TV: Freefall TV
The price falls non-stop until the quantity is sold.
Speed Auction: Gavel TV
Live rising price auctions.
Price-Drop: Beat The Price
The idea is that the sale starts at the last price the item sold for on either Gavel TV or Freefall TV and that price is dropped to an even lower price. Said price lasts through out the entire sale until the quantity is sold.