I think I agree with Herbert that $2,000 is pretty much the lower end for Spencer riflles. Below that you're usually looking at a rifle with problems. $2,500 is middling, and as you get to and pass $3,000 or maybe $3250 you should be starting to see something special, like a some case coloring, significant amount of blue, little or no pitting, pretty nice bore.
I haven't seen the gun you posted close up, but it gives the impression of not really being at either extreme. But here I am evaluating someone else's girl--if you've fallen in love, just let me congratulate you.
--DJ