[charlesdm]

First tip, always be willing to walk away from a deal. It gives you leverage. They've shown their hand by contacting you and saying they're interested. Would you hate it if you couldn't sell it to them? If not, then great - you now have leverage.

Second, price is often negotiated. A first offer is usually a lowball offer, but not thát low to be laughed out of the room. I'm not saying you can get 500k for it, but 25k does seem low. They obviously want it for something, try and find out how they intend to use or integrate it. Where would the value be for them? If they're a development company, maybe one of their clients asked for something similar? Determine the value and price accordingly. Make sure to make it a win-win scenario; the perfect pricing would be one where they'd actually waste more resources building it vs buying it.