Good work, poor pay - Software Engineer Pluralsight Employee Review

When I joined Pluralsight I honestly thought I might retire here. However the more recruiter emails I receive with pay ranges $20-$60k greater than what I'm making now - I'm reconsidering. I actually had two interviews in the past two weeks. There were promises of raises at the 6 month Mark in the engineering org and that evaporated after the reorganization. When I brought a desire to move to the next engineering level, my boss made it sound like it wouldn't be worth it so I gave up. The stock purchase program is factored into your total package. If you can't afford to buy into it then you're out of luck. The stock just dropped a ton and I lost about $15k in potential earnings per year overnight.