Angus 74 is correct....those sights cost more than 40 bucks. They are good though.

Check out the Cobra Easy Slide sight also. I actually prefer it over the other two, but it is just a personal preference.

I am pretty sure they are all in the same price range....60-70 bucks.

If you check out the Cobra, and decide you might want to try a good used one, send me an e-mail. I have several of them.