I did that few yers ago before coming to Ireland. Manley dealer had crazy prices in my country, while UK distributor had prices similar to USA (it was befote Brexit). I couldn't buy directly (because of the presence of an official dealer in my country) but my wife is English. So she could regularly buy the phono preamp I wanted, which was delivered to her parents' house. Next, we spent few days in UK and took the preamp in a luggage with us on the return flight. No question at the security check luckily...
I think I saved about 2000 euro, and the preamp is still in my system today.