Okay, so 70% of 30,000 is $21,000. Instead of it costing him ~$90,000 worth of time to sell BCC for $57,000, it cost him ~$63,000.
I'm not 100% sure I agree with Stavros' point, and I'd guess that there was a lot of downtime in the 3-week sale in which Patrick was doing other things, but if you read the situation as Stavros proposed it, the economics are the same -- as $63,000 > $57,000, it cost more to sell BCC than to keep it.
I'm not 100% sure I agree with Stavros' point, and I'd guess that there was a lot of downtime in the 3-week sale in which Patrick was doing other things, but if you read the situation as Stavros proposed it, the economics are the same -- as $63,000 > $57,000, it cost more to sell BCC than to keep it.