It may not be as it seems .I've seen from time to time them run the bids just to raise the price .In reality the saw will never change hands .They just up the ante on a few of them to raise the stakes,pay a little sellers fee and rake in the profits on the next half dozen .
Take for example a seller the goes by "Just David " Old Dave buys up
Mac Pm 610s' ,shines them up like a new penny and peddles them for upwards of 400 bucks .Pretty good ,turns 50 dollar saws into gold .He's only one of many .