This site offers a wonderful range of Italian vegetable seeds. 

Like all specialist mail order seed companies their seeds are not cheap.  In fact, at around $4.50 per packet they seem very expensive.  However this is misleading as each packet contains at least four times the amount of seeds as a standard seed packet.  So if you can split the packets that you buy amongst friends the seeds turn out to be quite cost effective.

And the range is extensive with most of the varieties not freely available in Australia.  I will definitely be buying from The Italian Gardener again in the future!