I’m of a similar mindset with Brent Simmons when it comes to App Store pricing. In his latest blog post, he lays out reasons for why a stable, non-changing price is the best policy.
I’ve also had the same idea, and my Apps (with very few exceptions) have had stable pricing since day one. It is a much friendlier environment when you know exactly what something is worth and never have to guess if it will be “on sale” sometime later. If you want an App, buy it and feel confident that you were not obtaining it at an inopportune time.