I agree. Italian Ebay is great. A lot more 126 parts on auction. I bought quite a few there but oftentimes, postage and packaging are too expensive. Beware, some sellers just refuse to sell to international buyers. There was one instance, when I bid for a lovely Fiat 600D, one owner, in immaculate condition. After the seller noticed that I was an international bidder, the seller sent me an email, saying that the seller would rather keep the car in Italy!
Also try the German ebay. Loads of interesting stuff there as well. They seem to be more geared up to international buyers.