Cheapest prices I've seen on this size
http://www.target.com/p/wd-passport-500gb-portable-hard-drive-black-wdbkxh5000abk-nesn/-/A-14077819#prodSlot=medium_1_26&term=portable+hard+drives
Four colors avail(YMMV) if that matters to some
http://weeklyad.target.com/minneapolis-mn-55403/pages?code=Target-130804#20
Page 20 of the weekly ad
http://www.target.com/p/wd-passport-500gb-portable-hard-drive-black-wdbkxh5000abk-nesn/-/A-14077819#prodSlot=medium_1_26&term=portable+hard+drives
Four colors avail(YMMV) if that matters to some
http://weeklyad.target.com/minneapolis-mn-55403/pages?code=Target-130804#20
Page 20 of the weekly ad