Argos cash back offer

Got this email from my friends at Argos: Discount code & Half Price offers - ends Tuesday Just to say that even if I use this or any other offer, if I use my cash back card, I still get my extra 5% cash back. So I still get to take advantage of the special offers, but because I use my cash back card to pay, I get 5% cash back on money I was going to spend anyway!! Too good to be true?? Well you have to sign up for the card of course, but as it is a pre-loaded card and not a debit or credit card, you can't overspend, and you don't pay  interest, over limit or late payment charges. And if you want you can get a card for your kids, and help them too! Great if you have a child away at Uni or just on a school trip. Just think, you could get 5% back on whatever your kids spend too, about time you got something back??