It depends on what you want to do, an 863 is a large machine, its rated to lift about 1.5 tonne! its a real monster. Most skid steers you see around the traps are around the 700-800kg range. The price is about rite for such low hours and its a late model machine.
Like i said, it all goes on what you want to do with it. If you want it just for around the land, you should consider an older and smaller machine. The 743 range is great as its all mechanical and anyone can work on them. The later model ones get a little more tricky with the electronics, so the repair costs can be higher if it fails.