How much should i sell my car for?

I have a Tomahawk ST RED purchased for  :Rs:19,500
Purchased in 2012
700mL (8-9 tanks) Tornado fuel done (inclv. of 4 breakin tanks)
Tires treads intact fully
No damage to body and chasis
Clean and tidy
No collision
Radio,servo NIB like
No scratch on underchassis
Reason for selling-Upgrade to New car

This is my first classified thing so i am really new into these things so wanted to get some advices.
Thanks
Sorry for posting no pics since i have packed the car and is kept at my parents home.