The cost of a hair cut

Why do we post the cost of a hair cut the way we do?
Post $45 on the wall and it might seem high (low to some).
How about if we post the price of a hair cut in $ per day?
A $45 haircut that lasts 6 weeks is a $1.07 per day hair cut.
A $22 haircut that lasts 2 weeks is a $1.57 hair cut.
We could market it in a number of interesting ways if we went that route.
Interesting thing is that as the haircuts get shorter... they grow out faster... and the skills to create them are more precise... the cost (think barber cuts) is lower per cut... yet if they last a shorter period of time they actually cost MORE per day to enjoy... as well they should.
How about the annual cost of upkeep?
A $45 haircut every 6 weeks for 1 full year is a $360 commitment.
A $22 haircut every 2 weeks is a $572 investment.
As a hair cutter it might seem that the $22 cuts are the better choice... Until you factor in the number of cuts you can do in a day, week, month. The higher $ haircut will always make you more money... unless you do not have the heads to keep the chair full.
From a marketing standpoint it is like water and gasoline. We gripe about $4 per gallon gas... and walk into the gas station and pay $1.39 for a 16oz bottle of water = nearly $6 paid for the water... which in most places can be had for FREE.
it is all in the marketing.
How are you marketing the value of your work?