I want to add to this comment. Previous HN discussions on acquisition have talked about asking for a non-refundable negotiation fee (a certain percentage of your approximate valuation). Acquisition is a distraction, and in a lot of cases falls through. You need to make sure the other side is serious about the aquisition

Found the HN thread: https://news.ycombinator.com/item?id=22013700

And the related article https://baremetrics.com/blog/i-almost-sold-baremetrics-for-5...