There were several different models of Optigan to choose from, ranging in price from about $300 to $500. As for how much they’re worth now, I suppose their value is in the eye of the beholder. I’ve seen functioning Optigans change hands for as little as $5 to as much as $600. An average price to expect to pay for one “in the wild” is $50 to $150. Online, from a knowledgeable seller, expect to pay in the $300-$500 range.