What I have noticed recently in UK TV adverts is that £xxx off special offer and then put an on-screen rider "discount on 'after offer' price". So they pitch

What I have noticed recently in UK TV adverts is that £xxx off special offer and then put an on-screen rider "discount on 'after offer' price". So they pitch it like a sale but really they will just offer whatever is left of their product at a higher price for a while in some store or maybe just online.