$0.87 delivered sounds like a good deal for an iPhone case. However the listing description shows the following are included in this deal, I wouldn't mind if I just receive the case for this price actually.
1x Shockproof Case for Apple iPhone (Colour and model of your choice)
1x FREE Screen Protector
1x FREE Stylus Pen
This price is only for the Purple color though, Clear or Black colored ones cost $4.35 delivered.
Ordered one for the missus's 11-Pro today and this Melbourne based seller has shipped it already.