I hope so but at VZW 12.50 a month MEANS you only save 12.50 for each month you pay so if you pay off in 3 months you only save 37.50 off of full price.
That's not the way I understand it unless VZW is doing it differently than AT&T.. I've described how the deal worked for me so I assume it's the same with VZW. BB instantly puts the $300 down. So you are financing $300 less. Hence the smaller payments. The payments are based off what you've financed.