That's a "total let down"......They get you all set up and ready to receive whatever you've anxiously been waiting for and then all of a sudden....more delay...The Christmas/NewYear holiday is most likely the reason
Except for the price, I don't see any differences in services when using USPS..."First Class" mail will arrive just as quick as "Priority Mail" in most cases but yet Priority Mail is more expensive....
Good luck on your delivery, I hope you get you new webcam soon.....