Just two days after that previous post, I received another email to say the pegs were now in stock again. So I ordered some and they arrived today. They seem pretty good pegs, light but (as far as I can tell without having yet used them) seem strong. Definitely worth £1 each! And there was a handwritten note.
Unfortunately, Joe put the wrong stamp on the parcel and it arrived with an "underpaid item" sticker "£1.50 to pay". But the postie just put it though the door anyway, so I'm not complaining about that.