Have a 999 that I bought new about 5 years ago. Comes with the side imaging transducer plus a puck style transducer that can be glassed in to the bottom of a fiberglass boat for clean readings.
All worked perfectly when removed this Spring. Has some white spots from bug spray on the black case. Doesn’t affect the screen. Ocassionally I’ve wiped a light coating of WD 40 over it which makes them much harder to see. Bought some back to black auto cleaner to try on it but never got around to it.
Asking $500 shipped in the USA.