I guess us Americans don't get a crack at it until after Europeans, but all the better for you if you live across the pond!
Going on now for Europeans-- YOOX.com is having their famous 'sample sale' - their clearing out of all Spring/Summer items at up to 90% off. It's pretty wild. The EU sale ends Monday, Oct 18, and then presumably (I hope!) the US (and by that I really mean me) gets to pounce! Last year I got a Derek Lam dress for $79!
I'm pretty sure all sales are final. And many many thanks to the anonymous commenter who tipped me off :)