Australia Looking for grids in NZ, and good internet sources?

Hi, I live in NZ too!
I found a pack of new grids for sale on trade me a few weeks ago, but it was like $35 for 9 grids (3 Cubes without tops?) !
I've found alot of used ones on Trademe, they pop up every now and again.
Or I've heard you can order them from amazon.

Do you need help finding good piggy food?

Wow, 9 grids for that price? That's really overpriced. I need at least 54 grids, since it's got to be cat proof. I was just looking at Amazon, and found 27 grids for 36 NZD. So it would cost me $72 + shipping. I'll keep an eye on trademe though.

I've found grids for sale on Trademe, PM me if you would like the link to them.