there is a couple of auction lots on trade me that include pipe cutters
turners auctions big lot in dunners
listing no's ;660 5304 99 and 660 5466 76

you should be able to get these at a good price and sell anything that is no good to you, perhaps here on the selling part of the forum.

you will have to bite the bullet on freight but look around as prices vary considerably

best of luck.

Trde me listing Listing #: 665093641
 

Ring Sulco in Auckland. They have one left at a massive discount for around $ 400 bucks!

theres an auction of more plumbing gear on trde me im sure i spotted a pipe cutter.
maybe youl get lucky this time.

trade me listing Listing #: 671296686  photo number three .

This is what im wanting to do
http://www.youtube.com/watch?v=916toHohcDM

looks interesting - where do you find them? locally in NZ?

Interesting so now theres three uses for a cast iron pipe cutter.
I dont know for sure but if you could get the chain then if you have an engineer freind then perhaps fabricate up something that would do it. i have a mate who loves making things that arent worth making just to see if it can be done.... i am carefull not to bother him too much!
Otherwise the best thing is to keep looking on trde me, they arent the most sort after item usually. I will keep you posted if i see one.