how much can I expect to recieve for this laptop

[Mario14]

Hp probook 450 g1
Specs:
Intel(r) core(tm) i-5 4200M CPU 2.5GHz
12 GB 1600MHz DDR3L RAM memory
512GB samsung 850 pro SSD
Integrated intel HD graphics 4600
Switchable AMD Radeon HD 8750M 2GB

It's used but in excellent condition

 

[Mario14]

i just check the net and found the same version as mine but with lower performances laptop and it goes up to 900$ new.
well i have 12 instead of 8 gb and SDD instead of HDD, it's used for 1 year perfect condition not even a scratch on it and battery goes up to 5 hours.
i can get 800-900$ for it i think?