Costco.com seems to have quietly yanked the $19.99 iPod batteries for 3rd, 4th, & mini Gen iPods. I wonder if Apple came down on them for it or they just weren't selling well...?
A cached version of the product page can be seen here: http://66.102.7.104/search?q=cache:KYOUpdLcQFAJ:www.costco.com/Browse/Product.aspx%3FProdid%3D11072704%26whse%3DBC%26topnav%3D%26cat%3D20612%26hierPath%3D79*80*+Costco+%2B+iPod+%2B+Battery&hl=en
A very good deal for a battery replacement!
A cached version of the product page can be seen here: http://66.102.7.104/search?q=cache:KYOUpdLcQFAJ:www.costco.com/Browse/Product.aspx%3FProdid%3D11072704%26whse%3DBC%26topnav%3D%26cat%3D20612%26hierPath%3D79*80*+Costco+%2B+iPod+%2B+Battery&hl=en
A very good deal for a battery replacement!