Once an order has been completed, it cannot be cancelled. This, in effect, is selling the product directly back to JM Bullion at the current asking price. BitPay offers merchants a way to accept Bitcoin without the risks associated with price volatility, as payments made in bitcoins are converted immediately to the currency of choice. Pricing, Payments, Savings Tips. Bitcoin is still in the development phase and has many security and privacy issues it needs to resolve before it can be considered a reliable form of payment. JM Bullion reserves the right to permit a cancellation or offset of your order.