Clubfrontier won't let me post; asking for help on price of Nissan?

Hey, so I made an account so I can ask a question on the forums but it still will not let me post on it without paying money I guess...stupid derps. anyways, my grandma told me earlier today that my uncle wants to buy my/grandmas truck..but i don't know how much it would be worth?
It's a 2003 Nissan Frontier Extended Cab 4 1/2 foot bed, automatic, mechanical doors/locks/windows. Everything is standard. It has less then 26,000 miles on it and has a tune-up and had the distributer replaced.

I was thinking like 5k for it? He is family and I want to sell it to him for cheaper then normal, but is that too low for the mileage/year?

inb4 this is not a nissan forum
As a fellow (hopefully) future toyota pre-tacoma owner, I am asking for help. ;~;

 

Holy shit that is a lot. o_o

 

Yeah, I confirmed it and 'errthang. They probably know I am a Toyota fan and are hating on me in advance. :O

 

YEah, nada is about 8k, which seems a lot more reasonable then 11k.

 

Thank you ^-^