Lot of nonsense and bad advice there I`m afraid , You are saying that the U.S does not have counterfeit scopes ? Avoid dealers who dont have what you want in stock because they are likely to supply counterfeit goods ! Best to buy from the States ! so when you have a problem you then have to post your scope back to the states!
My advice is would be buy from an established UK dealer , pay with a credit card, this will give you cover , if you are suspicious you've been sold a counterfeit contact the manufacturer direct, keep your receipts and scope packaging .
Based on my direct personal experience I'm quite happy to stick with everything that I've said. S