1. There is no limit to how many you can spend in a lifetime.
2. They are non-linear: the more you spend, the lower the integrity cost of everything you do in the future.
3. The effect of #2 is localized - if I still have a rack full of pirated CDs (both music and games) from my student days, I am less reluctant to pirate music, but that will not necessarily make me more likely to pirate movies or business software.
They can also go "negative" in a way, in that people who want to support someone will spend more than is reasonable. Just look at some of those recent Kickstarter drives if you want an example of that. People are willing to spend more real dollars because there are so many "negative" integrity dollars that the price is still "cheap" to them.
1. There is no limit to how many you can spend in a lifetime.
2. They are non-linear: the more you spend, the lower the integrity cost of everything you do in the future.
3. The effect of #2 is localized - if I still have a rack full of pirated CDs (both music and games) from my student days, I am less reluctant to pirate music, but that will not necessarily make me more likely to pirate movies or business software.