Are chasers rare?

Now I think the answer is obvious. I've been collecting Comic books since before I hit puberty (83 long boxes and counting THANK YOU lol) and used to collect baseball cards as well. So I'm well versed in variants or 1:10 ratiocards or whatever. I know the vinylmation chasers are like 1 per tray and I've seen the rare gold chasers from various pin sets.

Why I ask is because (as posted in another thread a week or 2 ago) I bought 5 boxes of the WDW Mystery Train pins. 4 of the 5 boxes had chasers. 2 Pluto/Figero World Showcase, 1 Daisy Space Mountain, and 1 Jack Skellington Tower of Terror. What is the usual ratio of chasers to standard pins made in sets like these?

On a side note, not realizing Pluto/Figaro was a chaser, I traded my double for a lanyard pin. Still happy about it because that pin was ugly heh

Thnx in advance!

In some of the series, chasers are rare. But I think with the WDW Train Mystery set they weren't chasers, so much as reveal/conceal where we knew most of the designs but not all. I think for that set, based on how easily everyone is getting them, they are the same edition as the regular ones.