I got mine from Lowe's. They actually came with a plastic cap on it. I just removed the cap and viola, just like factory hinge clips. If memory serves me right, they were around .60 each.
No picture, they were in the hardware section. They look like the caps on a child's radio flier wagon wheels. The ones I got are white. Just look at all of the hardware bins and you will see the clips.
I got mine at Carquest auto parts, walked in with a sample and he pulled out a box with several different sizes, just matched them up and was out the door in 5 minutes.
Dont remember exact cost, but they were cheap and worked perfect.