Hi mate, just a little advise that I hope other experienced modellers will agree with...
First of all, cheap isn't what people look for when buying a model. Secondly, you need more (and better) screenshots, try to include wireframe shots and UV mapping shots as well if possible. Give it a better description and supply information on the model.
Remember, for the buyer, this is like buying a pair of shoes without trying them on. The more you can tell them, show them about the model you improve your chances of a sale.
Good luck.