When making an offer, the seller can choose to extend the offer to other buyers incase the original requestor doesn't accept. Or, if the seller has multiple quantities of this same item, he can include the extra quantity in his offer. The buyer only buys as many as he wants, or nothing if the offer doesn't meet his needs. The sellers can then offer any items that are left for sale to the rest of the eWanted community. Items are sold on a first come, first served basis until all quantities are sold.
Buyers get exactly what they want and sellers find customers ready to buy.
Everybody saves time.