I'm not sure what the conversion rate is to New Zealand $$$, but you can purchase a Minolta Spotmeter F like silverpixel's from KEH.com used for ~275$US. Ahh, now if I only had 275...

I just can't seem to justify a $500 spotmeter when my entire LF set-up was under $350 including tripod... though I still need to get a better head.