Yeah, I don't understand why they make such a big deal out of being sourced from Italy. Olives grown elsewhere should make fine oil, and you could probably use the honest advertisement of non-Italian origin as a gauge for the honesty of the company.
I don't buy Italian olive oils any more because of the wide-spread deception. To be fair to the Italians, they were as dishonest as the Greeks and the Spanish. The list of brands was very long and the levels of rancidity/impurity were worrying.
The only name I remember that was found to be honest was Cobham. I think they're an Australian family business (but could be wrong). I have no affiliation with Cobham in any way, except I buy their extra virgin olive oil.
Interestingly, I know rancid oils are very poisonous, but have never found a reference to the ill effects of rancid oils.
Cobram Estate, as well as many other Australian olive oil brands are certified by the Australian Olive Association[2]. For some reason they have a separate website[3] for listing certified brands.
[1]http://cobramestate.com.au/ [2]http://www.australianolives.com.au/ [3]http://australianextravirginoliveoil.com/brands/
Cobram Estate is the oil I buy for dripping/drizzling on any food I eat. I just found it to have the best flavor out of the oils I tried and since they are Australian I thought I woulds stick with them.
I use random Spanish out of a can for cooking though.