They're a cool idea, although I've had issues with the pin separating from the front with some of the Merlin ones. For the price these are getting to, it wouldn't hurt for them to be a bit more durable!
Yeah, I've seen a few go that way, but agree with you on the price front as they have crept up in price over the last few years. £3.50 is a lot, but this provides more of a reason why I've purchased a pack of these just to try. I have some rare pins now and I'd hate to lose one!
So a scarefest 2017 badge has been released and already sold out by 5pm this Saturday according to the public on Facebook. One person claimed they were told there would be no more stock until fireworks? What is the point in that and of it's true I'll be disappointed very much.