It looks like a goner. Plywood core from what I can make out in the video, so by now the water will have wicked into all of the core - you'll never get that dried out and so it will slowly rot from within the laminate. If it hasn't been stripped yet, it may be worth some money for the parts, but it also looks like it's sunk, so a lot will be damaged severely or completely useless (engine[s], electronics, batteries). You'll also have costs cutting up and disposing of the fibreglass. The deck fittings will be worth something, spars and sails are difficult to shift. It might just be enough to cover the costs of disposing the rest, but it's not worth the massive effort unless you're desperate for boat parts and have a big yard. If you do, offer $1.