I have had quite a few searches on food heroes for Gambonis in Karori.The owners have provided some details in the comments section - and I have included their facebook and twitter links below.
A temple to Karori foodies!
Contact details are here:
(04) 476 5960
Parkvile Rd Karori Wellington
They also stock the award winning clevedonbuffalo.co.nz Buffalo products (Cuisine 2010 Artisan awards). So wander over and buy some of the yogurt - is is unreal.
They also supply spices from http://www.thespicetrader.co.nz/
If you know any more about Gambonis - write some comments and I will update the article from more - Food Heroes is proud to provide web traffic to local deli's!