3 ms·
One such example could be the Microsoft Points - perfectly falls under your description. I can never remember the exchange rates, and they deliberately offset t
by beowulfey 14y ago
One such example could be the Microsoft Points - perfectly falls under your description. I can never remember the exchange rates, and they deliberately offset the prices so you always have residual points. For example, the minimum points you can buy are 400 ($5) but the cheapest item is 80, then 240, then 360... so you will never be able to spend ALL of them entirely (barring many, many transactions).
- jacques_chester 14y agoAn additional twist is to price things in prime numbers so that buying multiples leaves a residual balance.
- eterm 14y agoBut isn't every number the sum of two primes?
- jacques_chester 14y ago> buying multiples Plus there's stuff like using off-by-one values for fractional exchange. Eg 79 points for 99c, or vice versa. If you step to 80p / dollar it's easy to calculate a sufficiently-good approximation mentally, but lots of people aren't used to mental shortcuts like that.