In this post, I am not just going to calculate the discount from a run-of-the-mill Dunkin’ Donuts food promo (because that would be too easy), but also try to connect it to the concept of self-interest and the invisible hand. By the way, this is NOT an advertorial. This is a legitimate post y’all. I love donuts and I love promos more. Upon entering a neighborhood Dunkin’ Donuts (DNKN:US see latest stock quote), I planned to take out one – or maybe two – donuts home. However, I saw this poster.

The franchise owner for Dunkin’ Donuts in the Philippines is Golden Donuts Incorporated. The promo price for this box of donuts is PHP 199 (USD 4.51). If I buy the donuts separately, this is what I’ll have to pay:
- 3 premium donuts – PHP 35 each – total of PHP 105
- 3 regular donuts – PHP 20 each – total of PHP 60
- 12 munchkins – PHP 4 each – total of PHP 48
Separately, the donuts cost a total of PHP 213, so there’s a savings of PHP 14 (USD 29 cents) or 6.6% with the promo. In my opinion, that small a discount is not really a good deal. Continue reading Deconstructing the Dunkin’ Donuts 3-3-12 Promo: How Much Did I Save and Why Dunkin Benefits More From the Deal