How to get my purchase prices of my moments?

[alexdpoon]

Hi. I've learned a lot from inspecting your topshot-explorer code, particularly how to get a list of moments that I own at the present time. Also, based on one of your other projects, I also know how to stream live listings and purchase events. But I think I'm missing something important. I want to build a dashboard for myself so that I can see not only my current moment holding, but also the prices at which I acquired each moment, and also the prices that I sold moments that I no longer hold. Given that those purchase events are in old, past blocks, I don't know how to get those. Can you point me in the right direction?

Also please let me know if this is not the appropriate place to ask this. Of all the places I found that show real code interacting with the Flow blockchain, I've found your projects the most enlightening thus far.