any good deals for humminbird accesories out there?

I have a 580 and I love it and its mounted on my Fishing boat. I just purchased a 20ft pontoon boat since we now have a very active toddler and I'm looking for a complete mounting setup so I can use the 580 in 2 different boats. I've found the mount, power cable, transducer, and GPS puck but this totals over 200$ and I only payed 329$ for the whole unit last year. I was wondering if there was complete "installation" kit avalible somewhere that is made for this at a better price.

Anchor Express or J&H products both have excellent prices on this sort of thing.

I have used both in the past and they are both excellent to deal with.