If you market domain names to dentists, this is a huge opportunity. Dental domains typically sell for solid dollar amounts as dentists typically spend tons of money on marketing. The drawback is finding contact information for dentists can be time consuming. I have a list of over 33k US Dentists, with names, addresses, emails, phone numbers, company size, website, etc. I am asking $275 for the list and I will only sell it to a few people. It's worth much more than that and one domain sale will likely pay for the list. One sale will pay for itself, list was updated last week so it is relevant. PM me if you are interested, thanks!