The Australian auction of 1800 MHz band spectrum auction raised AU $543.5 million, with Optus, Telstra, TPG and Vodafone all buying spectrum in the auction, according to the Australian Communications and Media Authority.  

 

Bidder Total price
Optus Mobile $196 million
Telstra $191 million
TPG Internet $88 million
Vodafone $68 million

source: ACMA
A table detailing who secured which spectrum lots where is available here.