The economist term is "utility". Strange word for personal value.
Personally in the past I've shelled out a pretty penny for PMDG's products, and enjoyed using them, (at the time I was cash rich, time poor). I gained enough enjoyment/utility out of the product to make it worth my while, then.
Now I'm doing the same cost/enjoyment sum with hindsight and I can't see me doing it again as I'm having a whale of a time in a little 25 quid Mooney.
Perhaps in 6 months I'll get the urge to spend a couple of hours watching Netfilx, occasionally pretending to ask ATC to let me up or down my FL - (them winds aloft are killing my fuel economy,) but not yet. $140 bucks worth of not yet.
Your own mileage may vary.
