Almost certain I've seen that helmet in the shops before.
Maybe it was just a very a similar looking one.
You are thinking of the regular Bell MX-9 Adventure helmet. This looks similar but has the Flex protection in it.
The regular MX 9 you can get at Motorcycle World. R4 600
http://www.motorcycle-world.co.za/product/bell-mx-9-adventure-solid-white/
TL;DR Bell MX9 Adventure is not the Bell MX9 Flex even though they look the same.