You can go to Gamestop, pick up a used copy for $24.99...
http://www.gamestop.com/Catalog/ProductDetails.aspx?product_id=63857
..Use this %20 off coupon..
http://www.gamestop.com/gs/newnews/fsi/images/EBC3006129.jpg
...and use your edge card for addt'l 10% off = $24.99 * 30% = $18 roughly