Replying to 2003 VW Jetta 2.0 cylinder misfire

So I started my car up last night and the engine light started blinking after it was feeling like the car was shaking. when I tried to move it it made a clicking noise from the engine and had a loss of power. Turned it off and on and it seemed fine so I drove 3 miles to the gym. Started it up the next day worked fine. Then the day after the problem came back and didn't really go away.

My gym buddy is a big car guy and ran the code on it and he said it was a cylinder misfire. Now I have 129xxx miles on my car, 5 speed manual that shifts great, engine turns on fine, so im pretty worried this could be the end of her. He said it could be spark plugs / wires its a pretty common thing to happen apparently.

Anyone ever have this happen to them? What was the fix/cost, etc

Thanks!