Where can I buy hair pins?

I want to buy hair pins as opposed to bobby pins. A hair pin is open and crimped on both sides, whereas a bobby pin is closed and crimped on only one side. I would prefer to buy in-store and not online, because shipping can be pricey.

http://www.sallybeauty.com/Sta-Rite-Hair-Pins/STARTE1,default,pd.html

EZ Combs Stretchable Hair Accessories with Styling DVD a…