The cost of the final solution depends on different factors:
the browser your extension will run inside (Chrome, Mozilla
Firefox or, for example, Safari), the way it will interact
with the browser, the complexity of its functionality and
UI/UX design, etc. So, it's necessary to work on the project
scope before deciding on a budget.
If you have already defined a core list of features of your
future browser extension, contact our browser extension
development company and they will provide you with an accurate
project estimation.