A computerized system and method for conducting electronic online auctions, which includes the presale of auction currency drafts for subsequent use at a specific auction site. The system includes a centralized controller which confirms the purchase of the auction credits and credits the bidder's account for use at a specific auction website. The auction credits are subsequently assigned to a specific auction venue. The system supplies inventory to the auction venue based upon a percentage of the total presale credits assigned to each specific auction venue through its affiliated auction sites. In addition, external and historical data may be considered by the system in its analysis regarding the correlation of the inventory characteristics with the venue design parameters.