I had the exact same situation. When I left they said how much do we have to pay to get you to stay. I literally told them that there is no amount I don't want to work for a company that won't pay me what they think I'm worth. The next job I took I got a 25% pay increase, and the job after that I got another 30% pay increase. At my current company I've gotten a bigger raise every year than I ever would have asked for and occasional bonuses.