It's not completely clear to me what you mean, but since you've added the tag 'Lebensmittel' (English: foodstuffs), maybe this helps because it refers to the sale of food where the 'sell by' date has expired . . .
I've never been there, but i called and the stuff being sellled in outlet is not Returned stuff, it is a regular Store with Late Dates Foods.. I am looking for these Sellout of Returned and jused stuff from Migros.
I don't know if there's an equivalent near you, but the big Migros at M-Parc, here in Basel, has a table in the electrical department with returned electrical goods.
It's been a while, but I remember prices being OK, but it was mainly cheap stuff to start with. I guess the decent stuff goes pretty quickly or is worth preparing for restocking.