Charges for equipment inspection vary between inspectors and states. Some inspectors charge per item and some charge per hour.
The duration of the inspection will vary based on the type and quantity of equipment. If an inspector is assessing equipment quickly, there may be a chance that they are not doing a correct and proper inspection. Conversely, if they are taking a long time, it may indicate a lack of experience or understanding of what they are inspecting.
An inspection will take significantly longer if you have not had your equipment inspected and logged correctly in the past. Recording data for the first time will consume a large amount of time. Once equipment has been inspected and logged, future inspections will be a lot quicker. The process can also be sped up is through the use of RFID.