EDIT: If you're talking about the one by [member=5]Bob Marino[/member] then this is for earlier versions of some tools (like the Carvex), or tools that are now discontinued (like the T15 impact drill): http://festoolownersgroup.com/festool-sales-dealer-area/some-new-(but-discontinued)-tools-on-closeout-sale-25-off-limited-quantities/
discounts were/are on existing stock of discontinued tools. As I recall they were mostly battery operated stuff that had the last gen of supplied batteries.