phone case shops in service stations

Ive always found those phone case shops in service stations absolutely bizzare. How are they all still open, making a profit, and operating...

Who is stopping on the M1 on a saturday morning, and decides to drop 17 quid on a silicone phone case that they can get on ebay for £1.80...

And dont even get me started on the charging cables, ive seen bog standard USB cables going for upwards of 20 quid... Utter madness