Actually, time (well, at least
quality time) is one of the things that I buy quite frequently. Offhand, for me personally: No car (so I don't have to fill it, service it, sell it, upgrade it, search for parking, insure, repair, etc.) - I can only do this because I can afford to buy near where I work (5 minute walk), and taxi/limo on-demand (Uber). Similarly, I have my groceries delivered (straight onto the kitchen counter), so I don't have to shop. I pay for fast internet (25mbps

) so that I don't have to wait (much) for data. There are many similar examples, of trading money for time.
For those with unlimited budgets, they don't have to waste time debating feature/cost trade-offs and tracking their spending. In many ways, the wealthy can pay to avoid queues: priority in airports (hell, even chartered flights), shopping in more expensive, less crowded stores, etc. They can choose jobs that they enjoy, rather than those that pay more (effectively trading money for more quality time or equivalently, less non-quality time), or even not work at all if they so choose. Would be nice...
