They do try to discourage the airmiles-purchasing behaviour: "The immediate bank deposit of $1 coins ordered through this Program does not result in their intr

They do try to discourage the airmiles-purchasing behaviour: "The immediate bank deposit of $1 coins ordered through this Program does not result in their introduction into circulation and, therefore, does not comply with the intended purpose of the program." and "There is a 4-box $1 coin limit for every 10-day period on any and all $1 coin orders. Beyond that your credit card will not be authorized. If you need quantities greater than this, please send an e-mail before placing your order to directship@usmint.treas.gov explaining why your order should be exempted from the limit."