50 cents, you're overpaying.
35 cents, with proper software can see as little as 1 second drift per day.
caps, 18 cents if only buying a couple, I usually get more
71 cents.
But I typically get my parts here
http://www.dipmicro.com/store/index.php?act=viewProd&productCode=XC7-16000
28 cents
http://www.dipmicro.com/store/C1K22-50
9 cents
46 cents total in 1-lot, and I usually get more to have parts to play with.