Theres just been a ton of them made. At first everyone wanted one. I mean they are still making them. So there wil be a lot available.
Personally I got one last April and sold it in June. Im a GnR fan and the pin looks/sounds amazing. To me it just wasnt a super fun pin to shoot. I had Wonka next to it and I think wonka is a much more fun game imho. GnR came the same weekend Stranger Things LE came and I ended up playing stranger things a lot more.