I have two (2) brand new Humminbird 718 sonar units for sale. Power cable, mounting bracket and a puck style transducer (for TM mount or shoot-thru) included. Also included is the Operations manual (on CD). These are monochrome units.
Humminbird's product description can be viewed here: http://www.humminbird.com/Products/718/
MSRP $200. The cheapest Internet price I have found is $168 --- I will part with these for $130 each, buyer responsible for shipping costs. If you're looking for a low cost, basic sonar/fish finder this unit will fill that need.
If interested, contact me at firstname.lastname@example.org or alternatively leave a Private Message here.