This was turning into a Platinum/Greatest Hits for the UK/Europe. Hopefully they are doing the same now for the US and that's why it is sold out & price dropped.
ditto on the BestBuy - Reach points cards. $2 off + free ship & no tax.
http://www.bestbuy.com/site/Microsoft+-+Halo:+Reach-Branded+Xbox+Live+1,600+Points+Card/1272641.p?id=1218245812316&skuId=1272641&st=1600%20points&cp=1&lp=2
Not the Greatest but Xbox 360 Splinter Cell Elite for $240.99.
http://www.amazon.com/gp/offer-listing/B002I0HBC0/ref=dp_olp_used?ie=UTF8&m=A2L77EE7U53NWQ&qid=1284123659&sr=1-8&condition=used