How to Know What is Available on the Market For Rare Palladium Bullion for Sale bullion, which is usually less than fifty percent pure. This will ensure that the coin or gold piece you buy will never BriefingWire.com, 12/10/2020 - When you are looking for Rare Palladium Bullion for Sale there are a number of things you will want to consider before making your purchase. Palladium bullion is one of the hardest metals to find, which means that unless you have the perfect place to look, you may not get the price you want to be able to afford. Most often, Palladium comes in fine gems and jewelry.