I've seen the set of three on Ebay for $5.95 plus $3.00 shipping.... fair I guess... It just seems to me a box of 10 would cost the same or less and I have alot of mopars to detail...
I bought four from my local Dodge dealer early last year. They are the same from '60-something until the mid '90's. I think Ram pickups were the last to use them, but they fit older style lock cylinders the same.