This one was probably about 8"x6" if not a little bigger, and I believe I charged $20 + shipping for it. For $15, I can do one smaller (I think the smallest I have is around 6"x4"), but it wouldn't have anywhere near the detail.
It looks pretty nice. Actually, depending on the photographer in question, lighting, the camera and the lens, it can very well do the object you are photographing justice... However, when you use a point-and-shoot your mileage will vary. In this case, the person was a bit too close to the object. As a result it ended up being slightly blurry with the fabric underneath (a pair of pants??) being in better focus.
Aside from that, I really like what you've done You're pretty talented