Thank you, Sage. I've put a couple of bids on our on-line trading site TradeMe, and been the under-bidder both times, but there are 10 pages in the 'amplifiers and tuners' section.
I had a snoop around the sevenoaks trader that punkfolkrocker suggested up there, and they are selling Marantz amps at what would be a very good price in NZ. Of course, transport would need to be looked into, particularly if the manufacturer casts them from concrete like Pioneer did with my turntable.

The Marantz DVD player that I use for CDs in the stereo has given sterling service.
If anyone needs a new cartridge for a turntable, then I can recommend 'LP Gear' online in the USA. Better than the original to my ear.