1. Instead of just looking at the opportunity cost also factor in the actual costs, e.g., Netflix requires a paid subscription in addition to time. 2. You coul

1. Instead of just looking at the opportunity cost also factor in the actual costs, e.g., Netflix requires a paid subscription in addition to time. 2. You could include affiliate links to services for earning money in free time as an alternative to wasting time with earning estimates given input time and skill level. This could include ride-hail platforms (Lyft, Uber), knowledge work platforms (Fiverr, Upwork), even Mechanical Turk.