Interestingly, my co-founder and I always still fell into the trap of purchasing something on the net and within a few days seeing the product for a whole bunch less. About a year ago, we set about building a tool that would "monitor/watch" the prices on our behalf and we wanted it to work on any shopping site.

A few month ago, we launched Pricify http://pricify.com and this is our first iteration. Basically, you can use a simple bookmarklet to add products to pricify from any online store, once the product drops in price the system sends you an email or facebook notification, if at any point the product hits it all time lowest price it sends you a separate email as well.

Last week we had a guy who bought a car as a result of the price drop he noticed and contact us to thank us. This has provided us further confidence of its use.

We've learnt so much already and are adding what our users are asking for. Ultimately, we want to build something that solved a problem for us in the hope that it solves the problem for others, so far we have been seeing promising results.

We want to get into the content, blogging from a SEO perspective, but we've had very limited bandwidth trying to focus on the main functionality itself being completely bootstrapped!

Early days, but would love any advice on whats already being learnt from the others out here.