.
If you consider inflation, two years ago money was worth more, so the difference would be more than just $12.
.
When something has the same price tag 3 years later, it's actually somewhat less expensive, considering the time value of money.
.
If you spend $100 today, it would be comparable to spending, say, $95 a year from now, but certainly not $105.
.
Imagine how many slices of toast you can have in 3 years: that should be worth something (unless you don't like toast).