Some items will come in and out of print from manufacturers quite regularly. This means that some products can go out of stock for weeks or months at a time (even if they’ve been released years earlier) and you might not know when they’re coming back in. Placing a restock pre-order removes the hassle of eagerly waiting for stock notifications that might get lost in your spam folder, or in the event that a product sells out before you even get a chance to grab it.