This discount is available either online at their website or in person at any of their stores (in State College, Party City is located in the Barnes and Noble Plaza across the street from the Nittany Mall). To take advantage of the discount, you must get your coupon or online code through this link. The coupon codes will change regularly in order to minimize the fraudulent reposting of the coupon across the internet.
I have personally called the Party City store in State College and confirmed that they do have Santa suits but I’m not sure what the variety is nor how many they have, so shop early or shop online.
As nice as these suits are, I also feel a sense of responsibility to let the distaff side know that Victoria Secret has some a nice offering too. Unfortunately, I have been unable to negotiate a discount with them.