[How to find the value of a gibson not listed in bluebook?]

1994 gibson rio dreadnought

[How to find the value of a gibson not listed in bluebook?]

yea only 150 of this model made . very limited info online about it . gibson when i emailed them had less info than i knew about it

[How to find the value of a gibson not listed in bluebook?]

i have a guitar not listed in the book. i have found one website that had alot of gibsons listed in a sort of blue book format which gives e an idea but im looking for a more difinitive source. should i email blue book?