Have you tried to compare it to others on gun auction sites?
Remember that there is a difference between asking and actual sale price.
It does look a little beat up, but if it functions, and everything is kinda tight, then maybe 450-600 on the high side.
"A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed."
Life Member NRA
Life Member NAHC
Former President of the ECPT (Eifel Combat Pistol Team)