Selling animated 3D models online

Way too often I have customers ask me whether a model is animated or is suitable for animation, whether certain parts of a model are rigged, etc. In some cases, this is not a straightforward question to answer. Now that we have video previews, it is easier for a customer to determine whether a model is good for animation and what parts of it are movable. Another great 3D artist shows his 3D models in a YouTube video. Now, as you look at this 3D model of a Transformer robot-car (Lamborghini Gallardo to be exact) there is no doubts that it is rigged for animation, and you can see that everything moves in this 3D transformer.