I know that I saw something on youtube about paying taxes on foreign bullion if you own more then a certain amount, the question is if that's true, and what about bullion from the US, do you have to pay taxes on your bullion when you cash it out, same with a IRA?
Only if you realize a gain. If you sell and are underwater, you can write off the loss with some limitations.
My advice is to save your receipts from the time of purchase. It will save a whole lot of hassle when it comes time to report.