represent that the part is in stock and on its way. In this case, you would call the next retailer and ask if the part is in stock before placing the online order. Preferebly a retailer with a reputation for honestly and reliability.
Pre-sale orders for a part that is still in development or "going to production" is a whole other topic and the buyer is already on notice to beware of the delays that are inherently part of that process. I try to avoid wasting my time fantacizing about the similarities of apples to oranges.