If I understand co-creation correctly, a customer can give their input and the seller customizes (generates perhaps) the model. After upload, the model is then available in the buyer's account. If the buyer has a shop on Shapeways is it then possible for them to re-sell their co-created model? It seems like I've seen co-created objects for sale, but I could be wrong. I'd like to generate unique models from and algorithm I created for each order. It would be nice to have a co-creator setup that didn't require any input for this purpose. If these were not re-sellable they could have a sort of limited edition quality.