I used to work in a guitar shop, and trigger capos were about $18, so I never bothered. There are a few songs I want to learn that pretty much require one, so I checked them out on Ebay and found them a LOT cheaper.
If you're looking for one, I'd go there and get one, because mine cost me under $3 after shipping.
I don't understand how they are making any money at all, because it came from Hong Kong, and you'd think shipping anything from there to here would cost more than that.
Seems to be every bit as good quality as the Dunlop I used to sell too.