Purely from a personal sales/buying perspective it has killed the market in many hobbies. From here to guitars to watches, classic cars and parts, literally everything has had the same catastrophic result. Europeans don’t want or need the added hassle or expense, it’s simpler to buy from the US as that has an established well practiced customs route. I’m not even sure the U.K. Hmrc has coded and published their updated rates. A major classic car importer I know is still waiting for confirmation on what rates purchasers are meant to be paying on imports, so they have been using the pre brexit rates for the US but for EU countries and hoping for the best, and this is how many years after we “left” ?
It’s been an utter failure.