I'm not sure kerr but I would do alot of checking to see who could be "potential" end users for it and what kind of market it could fit into before you even think about setting a price.
You would kick yourself if you sold it to a million dollar company for $50
Maybe Sierra Nevada beer is thinking of/or are selling beer to the Indian market for eg ???
Who knows but it may be worth putting a few hours research into it IMO
Just get dow to work, check about the company and give them a big offer to buy, if they give you a counter, that will give you a fair idea about what sort of company you are dealing with.