OK, no more. We must check prices elsewhere, in su...

OK, no more. We must check prices elsewhere, in supermarkets, before knowing the actual discount offered. Also check the invoice which indicates $ 15 for the delivery, while the delivery is supposedly free, the $ 15 being "for picking up the appliance at home". Why not say it at the time of purchase? Why not indicate picking up the device on the invoice? Is there an eel under rock?