@hellomiakoda ok but to be fair, it *is* more convenient for smaller purchases. And the throughput is much higher, so you won't get stuck at peak hours.
That's actually very important for me, because near our school there's a supermarket selling good Leberkäs in Kaiser rolls for cheap and a lot of peeps go get those for lunch. Some others get other stuff there too.
Getting close to 250 hungry IT students through within the same 10 minutes would be very hard without the self-checkout machines.