amd555

I have an enormous collection(close to 300 films that I have not seen). So I want to watch the most expensive or valuable films first. I'm looking for a site or a piece of software that I'd be able to create a list that would update price with amazon or some other website often(automatic or somewhat manual would be fine). Is there such a thing? I would love to have such a list with current amazon price; something I can sort by price(used prices preferably). Thanks for your help