for me when i ordered it from amazon lately, and the super saver delievery came earlier than i thought....said would come week of 9th jan 09 but came on the 4th :)
so could be the same ^^
i dno about COD4 but Dead Space is collect@store only and they didnt have that many in stock where i live...only miles away :\
might not be the same for you so good luck :)
i got it from shopto after that for £25...still hlf price
http://www.amazon.co.uk/gp/product/B0019CGTXK/ref=amb_link_82661853_1?pf_rd_m=A3P5ROKL5A1OLE&pf_rd_s=asin-coop-gp-1-A&pf_rd_r=08N4WH2YWJ9TDKNBJDCS&pf_rd_t=101&pf_rd_p=464248473&pf_rd_i=16423381
although not from amazon itself...