Amazon has these on sale right now. Free shipping on orders over $25. 4000 points [ame=http://www.amazon.com/exec/obidos/tg/detail/-/B000NDRT62/ref=pd_luc_mri?tag=slickdeals&_encoding=UTF8&m=ATVPDKIKX0DER&v=glance]Amazon.com: Xbox 360 Live 4000 Points: Video Games[/ame] 1600 points [ame=http://www.amazon.com/Xbox-360-Live-1600-Points/dp/B000B9RI14/ref=pd_bbs_sr_6?tag=slickdeals&ie=UTF8&s=videogames&qid=1221873672&sr=8-6]Amazon.com: Xbox 360 Live 1600 Points: Video Games[/ame]
If you play games that have downloadable content or buy games from xbox live then they its a nice deal. I buy a few games every once in a while and spend alot of my points on Rockband DLC which releases new stuff every tuesday.