Tiered based pricing rules based on certain condition

Summary: Requirement: 1. To create a Price list for parking hours based on certain conditions so that system will calculate the amount at SO line level.

Conditions are as below:
1. First one and half (1.5) hours = Free
2. Next chargeable first (1) hour or part thereof = 200 AED
3. Each subsequent chargeable hour or part thereof = 330AED

that means when entered 0 to 1.5 charge = 0 as total amount

1.5 to 2.5 = 200 as total amount(not price)

2.5 to 9999 (max cap limit not known as flight can stand in parking for many many hours) = 200(existing amount) + 330 rs for every hour

and UOM will be Each for price list
So, for business they want whenever they enter any value let's say 2.6 as qty on SO level,