I'm having a little trouble parsing your first sentence, but ... if you have a truly specialized/niche product, my best advice is to find high-profile people in

I'm having a little trouble parsing your first sentence, but ... if you have a truly specialized/niche product, my best advice is to find high-profile people inside the industry, partner with them in one way or another, and let them sell for you. We did this initially and it was instrumental in our growth. For most niches, there are trade organizations, annual conventions, and "connectors" (as Gladwell would call them) who have been around for years, teach workshops, run regional groups, etc. This is where I'd start looking. Hit an annual convention or two–you don't have to exhibit just yet (but it would help), but at least walk the floor and introduce yourself. Look at the speakers and get in touch with them. Many trade organizations allow you to advertise directly to their members. Hope that helps.