Alternatively, I could buy a Scott Scale 970: which are your advice?

Hello guys,
I would like to buy a Specialized rockhopper expert of 2015, bought in 2016.
I am a newbie and I would like to know if the forks of this bike are predisposed to carry panniers or if I have to adapt them.
Moreover I would ask you, in your opinion, which could be the right price for this model used but in good conditions..

Thank you very much!