That's a bit of a crock because I've gone into stores and thought I was buying something for the price listed only to find out that's not the price for round eyes.......not often, and if you make a scene they usually relent. Enforcement of laws are improving, but it's still not very consistent here.
Is $15 too much or too little? You can write off 100% of a computer with the new tax rules anyway, so the price doesn't really matter, unless you have no income.