Where to get valve shims?

[shayrgob240]

I need valve clearance shims to adjust the lash but the dealer wants $15. I found a nissan parts website that sells them for $8 a piece but still, that's a LOT of $ considering I need 13 of them. That's $104 just for shims, which is a lot of $ imo. Do u guys know wehre I can get these for cheaper?

Would a machine shop be able to machine them down to the size I want?
thanks

[infinitexsound]

machine shops can make them, but its going to be more expensive....