update: black is in and out of stock, try this pink or white model here
you can buy one, or buy three and make money ($5.83 credit or $15.83 credit with Zip promo, after further $5 codes applied, see option 2)
for buying one.
1. pricebeat with this link
2. then redeem with this link
$1 shipping (in app) or use free shipping code if that works
for buying three
1. same steps as above, but add the $5 codes below.
ALSO if you haven't already used the zip promo you can actually get $15.83!!! by using my deal here https://www.cheapies.nz/node/28279
confirmed with Brother by phone call, there is no limit on how many you can purchase and redeem in one transaction