I think there's nothing wrong with that provided the ger is
earning a reasonable amt of money herself. To many gers, retail
therapy is a good way to destress themselves. Possession of a
luxurious item gives them a sense of satisfaction from their hard
work.
I bought a LV wallet from my ger on her bday for abt 500 plus. And
seeing her so happy makes me feel happy too.
However, those working part-times, or not earning much, or have to
beg from parents / bf / siblings shd definitely be discouraged from
buying such luxurious items.