I bought a sheet of Starboard three years ago for just under 300 dollars. I still have most of it. It is very hard to work with. Saws easily enough, but it feels like a big piece of polyethylene. It does not hold screws well - they cannot be tightened to any extent without stripping the material. It is very heavy, yet still very flexible - nowhere nears as stiff as wood.
The only thing that bonds it is a 3m product called Starweld, that costs 70 some odd dollars (Cdn) for about 2 ounces. I am not sure who uses it Starboard, and frankly, I am surprised that it has found a market. I bought 1/2 inch as I had originally thought it might be good material for a bulkhead on a friend's boat.
It did make a good shelf for the VCR in our master bedroom. I still don't know what to do with the other 30 square feet - perhaps I can buy more VCR's ???