once u buy the mattress with a promo you got stuck with them and they start to abuse u, if u will decide to return or exchange u will go nowhere with them as they want to rip u off, to exchange they will try to charge u full price for the one u want + paying 149 $ return fee so u end up by paying the matress price twice, so if u r happy with ur deal and for any reason u want to return or exchange u loose.