I don't smoke and never have so know very little about lighters.
Anyway back in 1988 my friend was a taxi driver and sold disposable lighters to his clients when asked.
I was taking a day trip to Jersey and he said can you get me some cheap lighters , they are less money in Jersey.
So I purchased 50.
So I turn up at airport for trip home and chap at customs says
'I hope that bag isn't full of lighters ?'
I said " yes 50"
He then handed me one back and tipped the remainder into a skip full of disposable lighters.
I was very naive you could say lol
On return I handed my friend the one lighter and charged him for the 50 :-)