I'm trying to imagine a marketing campaign-- maybe "good sense at reasonable prices". Seriously, is it that small a niche?

High prices are a signal, in both directions. On the purchasing end, it signals commitment, and on the selling end, it signals good results.

(Btw, internet marketers routinely advise that charging more money means you get fewer customers, but there will be far fewer problem customers and you will enjoy working with them more. My own experiences support this hypothesis.)