A Tweet from Pocketwatch Games says that Monaco has sold over 520,000 units so far.
HIB is "Humble Indie Bundle" and BTA is perhaps "Beyond the Average" though I'm not 100% sure on those.
Sales update: We're well over half a million units of Monaco sold! (~520K), only includes about half the HIB sales since we are BTA
HIB is "Humble Indie Bundle" and BTA is perhaps "Beyond the Average" though I'm not 100% sure on those.