Logitech Cordless Wave Keyboard for $19.99 Shipped

Logitech Cordless Wave Keyboard for $19.99 shipped after code EMCMLNX46.  Here is a screenshot for your reference.  It comes in OEM packaging, which means no pretty retail box but is otherwise identical.  This popular cordless keyboard supposedly provides a more comfortable feel without the learning curve that comes with traditional ergonomic keyboards.  Most places have it for over $50.