Festool products on eBay often have higher price tags than what they are in the stores, for some reason.
Not true of *everything* you find on eBay...
You really can get some good deals from eBay if you are careful... but not often on Festool products... though I did get my RO 150 that way, and for what seemed a fair price. Still going strong, too... you do need to be careful, and research the product and other purchase options before taking a bite.
Occasionally, eBay is the only place I can find something I'm interested in buying... and maybe the occasional yard sale...