Humminbird helix 5 SI

So i got this fish finder a bit over a month ago and used it 3x. i am coming from a lowrance fish finder and i found out that i actually prefer the lowrance, so i am just looking to find out how much and if there are any interests on buying it.

still have all papers and box along with this mount

http://www.austinkayak.com/products/1356/RAM-Universal-Ball-Mount.html?k=ram

thanks guys

$450 firm.

Went out this weekend.... turn the contrast setting down and the screen will actually brighten... I was messing with the settings trying to get it to darken.... contrast turned up will do it.