I have never used this stuff as hubby dont like strange smells.
So pardon me for the ignorance.
I was at Myer and the Mall yesterday and saw how expensive they are. Normal price is $99 and some are well over $129.
Why are they so expensive?
Not sure if they all come with the oil or refill or how many. Even if they do, guess you'd still have to buy the refill later which is not cheap.
Because you're likely paying retail prices for a brand (or simply rebrand). They're $15 on eBay for chinese-made products.