Research carried out by broadband and mobile broadband comparison website BroadbandExpert.com.au has found that many Australians could be hit with large bills for exceeding the monthly download limit on their mobile broadband contracts. The findings reveal that downloading just two episodes of Channel Nine’s Sea Patrol after exceeding the download limit could cost as much as $140 (based on 700Mb per episode with a charge of 10c per Mb).