Here are some ways you can find out:
1: Check with THE AMERICAN MGB ASSOCIATION www.amgba.com
2: Check with Kelley Blue Book. www.KBB.com
3: Check with www.nadaguides.com
4: Check on ebay and see what others are selling for. Be sure to also click on "completed listings" for any that have sold and for how much they sold for.
5: Check on many of the craigslist sites and see what others are asking/selling them for.
Hope this helps.
1: Check with THE AMERICAN MGB ASSOCIATION www.amgba.com
2: Check with Kelley Blue Book. www.KBB.com
3: Check with www.nadaguides.com
4: Check on ebay and see what others are selling for. Be sure to also click on "completed listings" for any that have sold and for how much they sold for.
5: Check on many of the craigslist sites and see what others are asking/selling them for.
Hope this helps.