On Amazon.com where they are offering this
LEGO Ideas Sonic The Hedgehog Green Hill Zone Building Kit for just $63.99 shipped (regularly $79.99) after you clip the $5.90 off digital coupon!
Perfect for Sonic fans, this building scene models the classic game – complete with a Sonic the Hedgehog LEGO minifigure, as well as brick-built figures of Dr. Eggman and the Eggmobile, Moto Bug with 2 face options, and Crabmeat.