I agree with what others have said on the pricing, I'd say $40 - $50 is about tops for any item to get a quanity sale, once you get past that you are going to get into the market shrinking in proportion to the price. I'd suggest limiting a little, maybe a Pirate ship that would go to a ship-of-the-line to a sloop of war, and go from 1700 to 1820 in design, but wouldn't go down to rowboats. You could have a couple interiors that would work on all of them, great cabin, gun deck and so on. I'd guess people would be intrested in both putting the ship into the background, like you can do with the current excellent Victory for sale in the store and putting there Poser people in it for renders. The last is going to require removable sides for interior shots and poseable parts that move from Poser dials, like gunports that open and cannons that run out. Not to mention all the touches like breeching ropes and shot garlands and rammers and stuff! I also think castles and sailing ships will do better for you than modern aircraft.