Im fairly new to all this compared to alot of people, but I will say, if I was trying to make money from selling models, i'd build models that people are likely to want in their game. These could be anything, because there are so many totally different projects out there (guns, characters, trees, buildings.....the list goes on), the important thing is know your audience. Thats not to saythese models you have are totally useless; with major poly reduction u could use them as props. Unless you really want ur main character to be a wine glass there really isnt a need for so many.