We got ours from Mitre10, Masterton. Special order (7 days), but was in the following day. Cost less than $40 including the Promet from memory.
Bryan.
Me (Bryan), a great wife (Julia), a fantastic daughter (Molly), 1 Dog (Vizsla / Collie Cross), 6 Hereford Calves, 5 Chickens, 2 Pigs, 5 Ewe's and a random number of Rams depending on the neighbour currently grazing the paddocks.