The period of time specified might be quite small, having said that, including 10 minutes (as is the case with JM Bullion). Dealers do this to try to defend them selves from fast altering prices. Many of our gold bullion products and solutions are suitable for the gold IRA. https://josuegztld.jts-blog.com/33233351/gold-and-silver-bullion-for-collectors-an-overview