I was in a shop similar to this recently, I can't remember the name but "That's Entertainment" rings a bell... Anyway, I much prefer shopping in there to HMV. It's exactly as you say, at such low prices it doesn't matter if it's second hand or not. I'd rather buy a second hand dvd at a much lower price than pay at least twice as much for basically just plastic packaging.
If it works, of course.
EDIT- just looked it up. That's Entertainment has lots of stores in the UK, I'm surprised there aren't more as it is a fantastic idea for saving money and selling your own old dvds etc. They're also still doing free delivery if you order online which makes it more favourable than Amazon too!
I discovered the shop when I was in Blackpool and went on a spree thinking it was the only store and I wouldn't get bargains like that again on CDs and DVDs that I wanted (That sounds quite sad when I read it back
) but I was pleasantly surprised to find via their website that they had stores all over the UK and also an online store
A shop like that is perfect for me because I have an old music taste for my age and like discovering "new" music from the 80s and 90s, so it allows me to do that without having to pay £10 for each CD or illegally downloading those otherwise hard to find ones.