As a seller you may not know that much about the buyer's BATNA - in particular, are they looking for "my product or something like it" or are they looking for "

As a seller you may not know that much about the buyer's BATNA - in particular, are they looking for "my product or something like it" or are they looking for "a solid product with customers and a seller unable/unwilling to grow it." They may be fully willing to walk away and in many cases probably will, because if they were THAT gung-ho about competing in your niche market there's a good chance they'd already be involved with something competing with you and much more likely to decide to just build it themselves. Actually having more than a nominal number of paying customers is also a huge factor - how long did it take codetree to get those customers? Add customer acquisition time to your development time estimates.