Frequent auctions of 1000 goldcoins would be scheduled whenever there were at least 1000 goldcoins available for purchase. The minimum auction reserve price for 1000 goldcoins would be set at the price necessary to purchase an ounce of gold (i.e. gold's spot price plus around 3%). If the inventory of goldcoins available for purchase goes below 1000 goldcoins, then auctions are placed on hold until the total goldcoins over time curve makes it possible for more goldcoins to be available for purchase. Lastly, anyone can redeem 1000 goldcoins at any time and receive the current value of an ounce of gold less a storage fee which would be around 0.2% per year starting from the launch of Goldcoin until the date the goldcoins are redeemed (i.e. if you redeemed your goldcoins in five years from the launch of Goldcoin you would have a little less than 1% deducted from what you got for redeeming your goldcoins).
How is the auction reserve price set? Where is the auctioning happening? Where can you redeem gold?