Don't just guess, setup a sales site for your product (a test one) and do some A/B testing on pricing. Find out what the maximum threshold is for people on the product. Use an AdWords campaign (with a $100 budget) to drive traffic to it). That assumes you have a list of keywords you'll be using for SEO (you have that list already, right? RIGHT? Well, if not, you should...)
Or better: talk to a few people in your target audience. I can tell you right now that they are not (much) price sensitive. They are "impress my clients" and "make my job easier" sensitive.
