The corsair ram is pretty standard ram. Even if you get better ram, either in the case of clock speed or latency, the difference is negligible.
Anyways, Newegg has some cheaper ones.
OCZ has really cheap 2gb ram at $20.
http://www.newegg.com/Product/Produc...82E16820227124
If you can spend more, you can 4gb of ram for $40.
http://www.newegg.com/Product/Produc...82E16820227269