Wanted: Garmin 90 or 100 fishfinder

[SmithG]

Has anyone got a used Garmin 90 or 100 fishfinder for sale,
or point to good price new.
I've never used one so would like to try one out find gullies drop offs etc in shore.
and if any good would invest in good spec Garmin, If its worth the upgrade.
Any advise would be good
Graham

[eoin1981]

Try ch marine.com they seem to be very reasonable I've seen eBay items fetching almost brand new prices