Does disposable lighters have any value?
It depends. Over the years they will sooner or later become unusable because of gas leakage or flint disintegration.
And in many cases if you buy older disposable lighters the seller may have emptied them for safer shipping.
In that way they have no value as a lighter... but then there are us, the collectors. A strange bunch.
Prices vary widely. Don't pay too much. They are after all made as disposable objects.
But they may find their place in a thematic collection.