‘I really like that house painter,’ he told my father: ‘He’s really generous with his paint’ — According to a cost estimate from NerdWallet, the cost to paint the exterior of a three to four-story home is $4,000-$7,000. While most of that expense goes to labor, paint still costs roughly $20-$70 per gallon. That’s quite a wide range. At that price, it’s no wonder my grandfather decided…