I paid about 85 dollars for it. 100+ for any figure is pretty damn steep. Though I did pay like 98 or something for Guyver Gigantic, and I can say it was worth it. I'd try to find one for like 95-100 max if you really are just dying for it.
My story is the same as you guys, I started watching Guyver and Fist of the North Star when I was like 7-8 years old. Same the live action movies on HBO and then one day I was in blockbuster and found these weird cartoons of the movies I'd seen, the rest is history.