TigerDirect has the Logitech G9 mouse down from $90 to $40 after instant and mail in rebates. You still have to pay shipping, which is $7.99 for me. That still leaves this under $50 which is a pretty good deal.
http://www.tigerdirect.com/applications/searchtools/item-Details.asp?EdpNo=3255869&sku=L23-7306
http://www.tigerdirect.com/applications/searchtools/item-Details.asp?EdpNo=3255869&sku=L23-7306