I thought it had been stated here that PoTC was Sterns best seller at somewhere near 7000 games. ACDC and LotR are said to be close to that. Assuming these numbers are correct, there is no way GB will sell 2x more than that with 3 games a year being released and competition coming from multiple sources. Assuming the code is well cooked at release, getting in the category of the top selling modern games would be a more realistic target.