Non replying aside, I'm weary of anyone who doesn't post asking prices up front. Sure, if you have some rare kid station title that has a
in value, I can understand seeking advice or offers. But those would be few and far between.
As a seller, you should already have an idea about what would make you happy, so why waste everyone time? Just say what you want for it, and the people who can afford it will contact you, and the people who can't won't waste your time trying to low-ball or haggle you down to something that isn't realistic. It also eliminates people from going "Someone offered more, will you match?" or someone from intentionally delaying to reply to you, because they want to hold out for a better offer and use you only as a last resort.