It is hard to give a decent estimate without pics... good condition^^^ idk about $160/$180... great condition probably.. agian pics would go a long way in getting you an accurate pc.
E best thing to do for a rather quick sale is go in the selling section and see what they're listed at and then go a tad below that. If I didn't have too many already I woulda picked it up from ya.
ya it really depends on how fast you wanna sell it tbh, if you need cash today, put it at 160 OBO and you'll get a buck 50 for it, if you wait you can get prob the 175-185 ish