I have a general rule... don't buy a copy when the original is still readily available on the new or used market.
There's limits to that rule though. While I'd love a Colt Single Action Army, I haven't gotten to the point of wanting to pay that price. The Italian copies have been around for years, interchange with Colt parts, and work pretty well.
In this case I agree with asheman. Look for the real thing on Gunbroker.
The Israeli's off loaded a ton of handguns into the US market. There are a ton of Beretta 84's on Gunbroker right now.