An example now I going to get quotations from 2 big established agencies and 1 small agency.
I received the price of one security guard services for one month from 3 agencies.
a) $5600 a month
b) $5200 a month
c) $4500 a month
Now I needed 4 guards for two shifts to look after the security of the building.
Which one should I choose?
Your 2nd question on human life, I cannot answer