Earlier this spring, ordered the Humminbird Lakemaster Plus Chart Card - Great Lakes for my new GPS/Chartplotter.
They sent me one sealed box ... containing 4 individual sealed boxes, each having a chart card in it. They were $120 or so apiece.
I could have profited off of them, but I kept mine and gave away the others to people I didn't know (on different dicussion forums) for only the cost of shipping. I figured why not help others have a nice windfall that cost me $0. I may even have one left.