Just copied this from their own website :
Rest assured, though - we're using data from every release to determine print sizes for all future games. We're base lining print runs at 2,000 copies (no runs will ever be smaller than that) and we're looking at 3,000+ copies for the bigger games we sign (barring the developers wanting a smaller run). We're going to be actively trying to meet demand while keeping our releases desirable (that's kind of core to making sure our releases can sell out).