Liquid Bullion CAC offers Palladium Bars and Canadian Maple Leafs. Due to this metal also being known as a “PGM” it’s primary use is also for catalytic converters. Another key role for Palladium is in the technology used for fuel cells. This metal is extremely rare and highly volatile on the market. Its high came in 2000 when it hit $1100 and ounce and there was thought to be a shortage.