I can tell you from experience that if you can undercut the competition by half, you get a lot of slack when it comes to not having all the cool features the other guy has.
One of the things that I think many people miss about competing on price is that if you don't have the marketing muscle of the compititon, you need to be dramatic about your price. few will go with an unknown to save 10%; but if you can save 50%, well, that's a pretty good argument to go do some research on that unknown company, no?
(Overall, my position on the 'compete on price' / 'never compete on price' debate is "do what you are good at" - if you are good at selling to people with money, sure. charge a premium and take advantage of your connections and skillset. Rich people and large corporations need stuff, and there's nothing wrong with giving it to them. On the other hand, if you are good at being cheap and bad at selling, well, maybe you should think about attracting the attention of people willing to do research by lowering your price.)