As it stands, applications are ranked up based on unit sales, and not by the amount of revenue they pull in, so of course, lower priced applications will be more successful at getting higher on the list. Apple wishes to remedy this by re-engineering their ranking system, so that software won't be bumped up just by the number of units sold, but rather the cash they pull in.

This is not only good news for developers, but for consumers too. Companies creating applications are currently a bit discouraged from putting in more effort to make higher quality titles, because they'll get quite easily beaten out and buried by arguably 'worse' software due to simple price drops. Again, this means that you'll hopefully see higher quality titles hitting the Top 100 list soon, and maybe higher quality titles in general.