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Huh...I had travelled around the UK/Ireland last year and I don't think I saw any of these. Maybe I was hitting the wrong stores, or people were using them and I didn't recognize them.

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They're only in big stores, and you could easily miss them if you weren't looking. Also most people don't use them.

It is typically found in very large stores. I only have only seen this in two Tesco stores.

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