I'm 15, and I've been getting laser treatments since I was very young, and I would say it's definitely worth the cost, especially because health insurance can sometimes help with some of it.
I was born with PWS around my eye and going up onto my forehead, and after about 10 years of treatment total, its barely noticeable, and completely invisible.
Also, yours seems pretty light, judging by the picture, so it could even be covered up by makeup. I would reccomend dermablend, which is available at some department stores. It conceals my PWS completely, even when it's bright red after a treatment.