4AGE 43mm Silvertop ITB's come up on Trademe in NZ now and again, I paid I think NZ$120 for my first (clean, tidy) set, with manifold, injectors, TPS, linkages, inlet plenum, FPR, vaccum lines etc etc. My second donor set I paid $50 for just the throttle bodies, TPS and linkages.

so yeah in NZ anywhere from $40 to $150 - pretty good buying