Scan are selling the Nabi 2 bumpers for only £1.19 at the moment. RRP on these is £24.99. They currently have Green, Purple, Orange, Blue, Pink and Glow in the dark all at this price so may be worth getting a couple.
Shame delivery is so expensive but it's a good price for the bumper if you are already buying something else.
You can pick 2-5 day delivery for £3.33 if you don't mind waiting longer for it
Purple is now showing as End of Life but the other's are still available