Ok... it's just that $135 seems rather harsh.
I knew there was a reason to not take my car into the shop.
Valve adjustment isn't hard... especially if you can find the double-step feeler guages. With those, the tip is thinner than the blade... such as in .008/.009... so the .008 will slide in but the .009 won't, and you are set. Tighten down the nut & recheck.
Maybe you can find a neighbor who tinkers with cars. If you find someone with an old VW, you are set. <g>