Justing wondering, if you submit a link to google without paying, does that work?

No problems to submit a free link on Google, but you still need to work to gain your expectation. But if money will be involved. Instant traffic from google will come instantly.

Thats ok! but you still need to work to promote your site! Submitting your site to google doesn't mean you stop doing SEO . . .

Yes, it works, but submitting your site to search engines it's only a first step of big and hard work.

There is NEVER any need to submit to Google