It's not group buy at all, thats how much you can get them on ebay. A lot of shops around here try to sell them for $299.99 or more. So I guess $40 is a discount to them. They get these parts for cheaper so they are just trying to market them higher.

Like I said I got mine for $225. These things been out so long that they should be a little less now $300+ is outragous.