In supermarkets here, it is common to ‘snap apart’ 4 or 6 packs of yoghurts and just take how many you need.
When I first saw people doing this, I was amazed that staff members weren’t intervening to stop this sheer act of yoghurt vandalism (as it appeared to me). However, you’re perfectly allowed to do that here. The same goes for many products that are ‘attached’ in similar ways. You do not have to buy the whole packet, just take however many you want! The prices shown for yoghurts and ‘grouped’ items – are shown per 1 item, and not the price for an entire pack (I learnt that the hard way)
I’m not sure if other countries across Europe have this practise or not…but we definitely don’t in the UK! There, you buy the entire 6 pack of yoghurts or you choose individually packed ones. Heaven forbid you start ‘yoghurt snapping’ in the aisles of Sainsbury’s – all hell would probably break loose.