If I was to sell a guitar what would a good price be?

If I was to sell a Alvarez acoustic guitar how much should I sell it for? Just asking if I was going to sell it.
# 1

Type in your make model number in a search engine.
Check internet sales sites for comparable guitars.
Here is a search sample
http://popular.ebay.com/musical-instruments/alvarez-guitars.htm
Check local guitar stores
What condition is it in.
What you originally paid.
Personally I wouldn't sale unless you absolutely needed the money.
You never know when you'll need a back up. jmo
Check internet sales sites for comparable guitars.
Here is a search sample
http://popular.ebay.com/musical-instruments/alvarez-guitars.htm
Check local guitar stores
What condition is it in.
What you originally paid.
Personally I wouldn't sale unless you absolutely needed the money.
You never know when you'll need a back up. jmo
# 2

I believe that a fair price for a GOOD used guitar is between 62% and 75% of what a new one sells for.
# 3

# 4