UnitPrice.org: Price per unit analysis on Amazon listings

I developed unitprice.org for a number of reasons. I like aggregating and parsing data, I like shopping at Amazon, and I like finding the best deal. I also wanted an excuse to experiment with static website generators (specifically Jekyll). And so here we are! When purchasing pacifiers for my son (and despite my new-dad stupor), I realized that the greater quantity pack cost more per pacifier than the smaller quantity pack! This has continued to nag at me. Have I been missing out on some savings per unit for other products too? Is the giant quantity diaper box always the best choice? How can I grow my son's collection of Duplo bricks with the least cost per brick? These questions were the catalyst that led to the creation of this website. I'd love to hear any helpful feedback you have to share. Specifically, I'd like to hear your thoughts on the information that I'm offering, the organization of the website, and the products that I'm analyzing. For that last one, please share any additions that you'd like to see! Ideas on how I can grow and expand this concept would be greatly appreciated as well.