As part of my data capture tool set I wrote a scheduling app that downloads auction house data at set times. The app also supports plugins and I have plugins that compress the auction house .json files into .zip files, another plugin that scans the auction house data for any newly discovered item id's and queue's then up for download. I have been using it to capture data since december 2013 and have aquired over 1000+ auction house captures consisting of 1.5Gb of compressed .zip files. I have provided some screen shots below.