Mercadolibre account information tool

Hi everyone, We need a someone to help us make a System to get information from our Mercadolibre account and display it in a user friendly, easy to understand format. Basically, Mercadolibre have an Api that gives a lot of account information by Json, we want to get some of this info and display and sort it in our convenience. The main feature we need, is to be able to select and item (or several) on our store, select a time frame and the system will show us all the sells that that item has in that time frame, and more important, the amount in $ that that item has made in that selected time frame, and the most important feature is that the system needs to give us an average of the price we sold that item on that time frame, for example: 1. Select 1 month time frame, and select just one item: The system will show something like this: 1. Item 1 , 1 pc, $179 MXN 2. Item 1, 2 pc, $349 MXN 3. Item 1 , 1 pc, $169 MXN 4. Item 1 , 1 pc, $189 MXN 5. Item 1 , 1 pc, $179 MXN Total sales 6 pcs, $1065, average price $177.5 For now, that is all we need, but we are looking for a partner that help us many features like this we need to help us optimize our analysis, our account is Mexico, thank you for your time, waiting for time and $ proposals. Gustavo