What's it worth?

Humminbird Helix 7 Mega Chirp G3N with side and down. Bought new in April, and after updating the software, works much better. I have the original box, and manual. Also will come with the XNT-9-SI-180-T TM Transducer, a LakeMaster Smart Strike card, and a blank Autochart live Zero Line card. Unit has probably 80 to 100 hours on it. Just updated software a couple weeks ago. It was just too small for me, I have since bought and installed a 12 inch fish finder.

Is this a Helix 7 -10 ????

Start high,...you can always go down. Depends also if they have gone on sale since you bought yours.
75 to 60 precent would be ballpark I think...

Sorry, thought I put it in there, it's a 7. Went back and edited it.