He is right, you can always find the estimated ship date on the description page, down at the bottom
Most drops have about this long of a wait. If you got one that shipped in a few days it was a MassDrop collaboration that they keep in stock.
If the wait on this one is unacceptable you can go to your Profile and under transactions you can cancel the order while the drop is still live.
But, unfortunately, it's just the price we pay for the discounts here