Eh? I buy most of my DVDs in supermarkets...
Did you go in and ask "Can I have a DVD please?" and they threw Stuart Little at you?
No... there is no service like that in Polish supermarkets. Everything is on the shelves and you just take it down yourself. The people who work there do everything. They put the price tags on, they clean, they take the goods out of the warehouse and put it on the shelves and they run the registers. There are no separate employees for each of those tasks so they don't exactly have time to help me choose a DVD.
Also, in Poland, if you buy something at a supermarket, you do it because it's cheap. With many things you can't get the same quality at a supermarket that you would at a proper store. Therefore you can buy a DVD of a certain movie at, say, a good online shop and you will get proper world-standard quality DVD. If you buy it at a supermarket, you will get an entirely different, although cheaper DVD. All the features are still gonna be there with all the menus and the extra footage and bloopers and such but the quality is worse.
You might think: "well, why don't you just watch movies on Netflix or Hulu? You would get the same quality everyone else in the world gets every time." - Well guess what: Netflix and Hulu are not available in Poland. If you go to the websites, you will just get a message saying: "we're sorry but this service is not available in your country". There are tricks to get around that, but when it comes to payments, you would have to do international money transfers every time. Those are costly. Alternatively, you could use paypal, but many people would rather not since, at least in Poland, paypal is very unreliable. They freeze people's money randomly and such.
So yeah... the only way you can get a movie in Poland is either by buying a crappy DVD at a supermarket for a reasonable price or spending a considerably bigger amount of money at an online shop to get a good DVD. This, of course, wouldn't be all that bad if you actually had a decent choice of movies in either of those options. But you don't. Both supermarkets and online shops only sell what is popular at the time. If you want to buy a DVD of an older movie or an obscure movie... you simply can't. There's no way in hell you will ever find it anywhere.
So next time you hear on the news that piracy is very high in Poland, now you know why. Even if we have the money, we can't buy what we want.
Buuuuut I digress...