Visiting a dealer would be a good place to start. Or see if there is an appraiser near you. ( Value) has many factors.... Market value is Dependant on location, availability, popularity, many factors. Insurance value is determined by the possibility of needing to replace. There are lots of factors.
You can research to see what other people are ( trying) to sell them for, and what they actually sell them for ( eBay, dealers...) If that is what you are trying to determine. Location always matters in resale value- what sells for $50 in one area may be $250 somewhere else.