In my recent experience you will be able to get one much cheaper out of the US, than you will the UK. Ive just brought an Athlon Ares BTR 4.5-27x50. A mate is bringing back in his luggage in a weeks time.
In the US that scope has a Athlon enforced RRP of $850USD, nearly all the dealers stick to that, but i got onto one that sold me one for $650USD shipped to anywhere in the US. But the US dealers are not allowed to ship them out of the states, so you need someone there to ship it for you, or bring back.
Optics Warehouse in the UK are the main seller of Athlon and some other emerging brands. Their price for the Ares BTR 4.5-27x50 is 816 pounds.
I think the member you were refering to was @SlimySquirrel I will try to find the links to his posts. He has done a youtube vid on it too.
Edit: Links added
https://www.nzhuntingandshooting.co....d-value-39080/
https://www.nzhuntingandshooting.co....res-btr-41129/
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