Not sure if every poundland sells dvds, but my local one does.
I like to see what they have but the stack them in a way so they're all facing forward and you have to flick through them all to see what they are. So a couple months ago I flipped them all on their side so I could scan the spine, it was soooo much quicker!
Well I've been in there twice since and they've been put back to how they were, so I keep flipping them on thwir side again.
It makes so much more sense.
Fwiw... I don't deliberately aim for pl when I'm in town to purely do this. It's just when I happen to be in there and want to look through dvds