Well according to Fokker Fodder by Paul Hare One of the two B.E.2es sold to Australia ended up with the registration G-AUBF and part of the Queensland and Northern Territories Aerial Service Company, or as it is now known Qantas. The aircraft cost Charles Knight £450.
There is more on the Qantas website.
I really enjoyed Fokker Fodder. If I have any complaints it is that it spends more time on the aircraft and little on the period in 1915.