A product I want to purchase is listed as "Pre-Sale." What does this mean?

This means that an order may be placed for this product with prices being locked in, but shipment will not take place until that specific product is received by BGASC. There will typically be a date estimate in the product description or product title for when we expect to receive that first shipment. This is very common for items coming from the Royal Canadian Mint, U.S. Mint, and other world mints.