Whatever your opinion is of the product, The Shack seem to have the best prices on the Caig product line. Here's the link:
http://www.radioshack.com/category.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F005%5F012%5F000%5F000&Page=1
http://www.radioshack.com/category.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F005%5F012%5F000%5F000&Page=1