Purchase Lowrance equipment between February 14 and March 27, 2011 and receive up to $500 Cash Back on select Lowrance products, and up to $200 on select HDS displays. Qualified products include HDS multifunction displays such as HDS-5, -7, -8, and -10 models; BR24 Broadband and HD Digital Radar; Sirius ® Weather Receiver; SonicHub™
Sound Module, LGC-4000 GPS Antenna ad YES, even the LSS-1 StructureScan™ Sonar Imaging System. 

If you are thinking about a new unit this is a great deal See the attachment.
This website has the best price on the HDS units http://www.jthelectronics.com/