I also got auction inspector a while ago, but had the exact opposite experience.
1. Hardly anyone uses eBays want it now, or no one I know anyway. How can you predict demand with such a minority??
2. The software only gives you the product name and no more info. i.e the price, which you might expect it to be worth a lot more than they think.
I personally think that the software is totally useless, and I will stick to the old fashion way, but I do respect that other people do like the software.