Most people price by guessing, then feel guilty about the number. Start from your real costs, decide your margin on purpose, and see what you should actually charge.
Overhead is your share of the costs that exist whether or not you win the job:
software, insurance, phone, travel, accounting. Divide your monthly overhead by the jobs you
expect each month.
Next step
Know the number. Now send it without flinching.
Build the quote properly and invoice it in seconds with the free generator.