I'm going to request customer interviews via Linked In In Mail with people who fit into several target segments. How much would be reasonable to pay for one meeting (about 30 minutes)?
Not sure which segments you're researching, but if these people are truly interested in the problem you'd like to discuss, they will usually do it for free. It's a form of validation if they are interested in your motivations.
Also, I've had some success using free connection requests with a personal note attached, instead of using InMail (which feels very recruiter-like).
Thanks! You're right!