I don't understand what the bid of "2950.0%" is supposed to mean. But $40821.61/ozt sounds like "bid up close to spot, with the decimal point off by one space".
1 Troy ounce is 31.1033 grams. That would make this roughly 3 and 1/3 ounces. I think your math is slightly off.
From the auction house web sight; The bidding in the auction will be represented by a percentage of the spot metal prices, which will be fixed immediately before the auction begins and remain unchanged throughout the course of the auction, eliminating bidder’s market risk of precious metals price changes during the auction. Starting bids begin at as little as 90% of the metal spot price. Once a lot is hammered, the sale price will be listed in U.S. Dollars on all invoices and prices realized. The price you pay will be exactly the winning bid percentage of the fixed spot price set before the auction begins, multiplied by the number of precious metal ounces in a lot, plus shipping, handling and any applicable taxes.