Your mates order for a set of pawls would not been any use to him then if he actually needed a couple of bearings a wide range of which are available in the UK.
There is nothing in terms of export post Brexit that would cost Canyon £500 on one bike so that increase is obviously a general price increase. If a deposit..or (foolishly) the full price was paid, a contract was formed so Canyon are obliged to fulfil the original contract terms.
You mate needs to direct his angst at Canyon for poor customer service and breach of contract.
My mistake, I meant pawls, not bearings, so he's still directly out of pocket by a lot of cash. Regards the other friend and Canyon, I'll let him know that Canyon were wrong to tell him the increase in cost is directly due to brexit. I'm sure that once he points out their mistake, they'll back down accordingly. Hopefully, they'll quake in their boots, as the rest of the world are supposed to, at his british might ?
I get that you think brexit is a good thing, but these are real people being financially inconvenienced by it, whether you like that or not. I sincerely doubt that any of your 'clever' answers will help them either.