Linsoul via Amazon.co.uk.
Ordered 15th Feb. Delivered 9 days later.
I did check the colour choice was available immediately from stock though. I love it and would almost certainly have customised it exactly the same way.
No additional fees were expected. Last mile carrier was Royal Mail and I checked with Amazon directly to get confirmation there would be no customs etc. The seller is Linsoul-Audio-UK after all.....
All that said - I’d have bought used if I could have found one at the right price but I got bitten and impatient.