It's definitely a 1985 frame. While it's a relatively poor resolution picture taken for the non-drive side, it does appear to have a Sugino crankset and SunTour Shifters. SunTour tended to favour a shift mechanism with a straight lever that protruded from the centre of the drum, whereas the mid-range Shimano levers of the period (New 600EX and 105) had levers that extended from the top of the drum and had a small upwards curl/flip at the end of the lever. They are likely the OEM SunTour/Sugino/Dia-Compe compnents.
Price is fair for an average market, provided it's in rideable condition with no major issues. I see a bulge in the top tube, just behind the half way point. It looks like it could just be a wrap of tape but I wonder if it's hinding anything?