i worked there, they will most likely do it as there is a time frame in wich u can return items (walmart useually will take open items for sum reaon i do not understand it but they will, for the most part unless u get a asshole.) so i would take your reciept there and try its worth a shot, the worst that happens is they tell you no, but i am pretty sure they do the price mark thingy within 30 days or some shit like that.