http://www.blowitoutahere.com/Games/Game.aspx?h_id=H++++51212&search=halo 3&sec=all games&prodid=MCST44449TSX
Just ordered mine, came to $43 and some change....
Just found this on sale.......not bad......$35 + tax....free shipping.... http://www.newegg.com/Product/Product.aspx?Item=N82E16874103129&cm_re=xbox_live_12_month-_-74-103-129-_-Product