[talkingquickly]

We built this for clothes (http://www.shopofme.com) a while ago. It did some fashion specific stuff on top of it but in essence the same principal, alerts when items drop in price.

Might be interesting to chat as I'm still running the site as a side project these days after the primary business model didn't work out. We built a fair bit of pretty solid tech for it so might at least be some knowledge share there? Contact details in profile.