Assumed you mean MarktPlaats.nl; it has been developed by a Dutch person, Bob Crebas, who later sold it to eBay.
Yes. A reverse auction is different from a regular auction. The roles of the buyers and sellers are reversed. In a reverse auction, sellers are competing for business.
barraks
Fine Art auctions.
The action of calling the highest monetary bid of purchase among other bidders for a specific item.