How did you go about picking those 220 people? Did you put together user personas based on who your ideal customer is? What questions did you ask these people

How did you go about picking those 220 people? Did you put together user personas based on who your ideal customer is? What questions did you ask these people? For example; you can't say, "How much would you pay for this?" Your friends will tell you what you want to hear and strangers will, as often as not, say some variation of "It should be free!" Also, it's really hard for people to understand an idea based on a pitch. You'll have a lot more success if you can put a prototype in their hands and watch how they use it and note what kinds of questions they ask. My company built a whole service on market validation because we found there are a lot of would-be entrepreneurs as well as existing business owners who are concerned with how to determine if their idea is viable. They're also frustrated with how expensive it can be. One client was told "Write us a check for $400,000 and we'll see how far we can get" without any consideration for whether the idea has merit! We help them determine that for a fraction of the cost, including building the prototype for them. So, don't give up! Just because you're not getting any responses doesn't necessarily mean your idea is bad. You probably just haven't been asking the right people.