PMC Prices in 2023. The price of Silver and Gold Metal Clay floats with the global spot price of silver and gold. Fine silver is the main ingredient in all silver metal clay products and any fluctuation in the silver market can make a big difference to the price we pay for our silver clay. The same applys to gold and to the Gold Aura 22k paste we sell. During the past 18 months there have been significant increases in the spot price of both silver and gold. Unfortunately there have also been corresponding increases in international shipping and freight to Australia on all of our imports and we have had to put prices up accordingly. Bulk purchase discounts are still available on most PMC products and we will continue to offer the most competitive prices we can.