I have an opportunity to purchase a 520ST with monitor from a local game store. I'm told it's in working condition but it doesn't have the cable to attach the computer to the monitor so I'm not sure. Also not sure what else it comes with, I'd have to check. They are asking $70 Canadian for the lot. Is this something I should consider at this price? I see similar lots sell for about $80 to $90US so it doesn't seem to be an out of whack asking price but I'd have to get this monitor cable so that adds to the cost.