Actually Russ it's darned easy to get the VAT passed on your purchase. Been doing same for years as the 'products' are for 'export.' There may be a bit of paperwork on the seller's part (no clue what that may be, but apparently it's not a "big deal."
Only thing you have to remind the seller is where you are and to fill out the 'form(s).' Can't say how that works if shipping to another European Country, but over here to "The States" works just fine. Not to mention reduces you cost by something like 22'ish percent which covers the extra postage.
As far as delivery time, (two packages in the last 5-8 days) it usually takes about 5-7
working days based on the postage date. Was one odd one off, but that was during really shittttty winter weather over much of the United States a few months ago.
Sending 'stuff' the other way usually takes about the same time from when you Post till same is in the UK. There, that can take a bit more time for delivery.
One bit of advise for someone sending 'things' to the UK, you can sign up for all sorts of this and that with the US Postal Service ...(on line tracking, return receipt requested, et al) .. but once the package hits the UK ...
Nada happens back from their end. Save for insuring same (possibly smart?), no point in paying the extra cost involved.
Oh Goodie; Stock Market (thanks France) tanked another 500+ points.

Another reason to be glad my 'work computer' is now a very expensive 'paper weight.'
Many PM's/e-mails the past several day asking 'How are
you doing?' Obviously my angst/ah-sh its/et al's, and the 'et al's' were by far the personal worst, came through loud and clear in my posts. Doesn't happen often, many years apart, but life becomes an upside down pyramid and you know what collects at the bottom.
For that I
must apologize, but the 'collective you' pulled me up by the ears, gave me a good shake and a 'get on with it, you ain't .. well, the words would be removed by Mr M or Sofi. Or whom-ever.
fae