Cyber Essentials for your business, you don't look at the costs after you've decided to invest, you look at them beforehand!
The total cost of Cyber Essentials certification will vary depending on multiple factors:
Which level you choose
What security systems you have in place
How robust they are
What improvements you need to make
How long it takes for assessment and update implementation
Cyber Essentials Certification
Remember that some of these factors are price differences and some are time costs.