clutch
if the clutch seems really hard, its probably aftermarket or new. Soft and high revving with no go as you push the gas is what you want to look for. Slipping clutch. When i got mine, i was told it had its normal tune up done. I went and changed the oil again, plugs, tranny flush, radiator flush, inspected the under carrage for damage ect, That way I knew when it was done so I could start a new mileage service for myself when to do it next. As for the other maintenance like the timing belt, water pump, seals, accessory belts etc. Check if that was done, most people have them changed aswelll for a sound mind knowing it was done even if the previous owner said it was done, who knows maybe it wasnt or was. Anyways you can have them checked by a certified tech if it needs it so. \
Depending on int, ext, etc, post some pics, it would give a better guide for us viewing what it would be worth from a picture stand point.
good luck