Seeking Sponsors for the Below Projects Project 1. Purchase an Australian Registered Body Number (ARBN). What: Australian Registered Body Number (ARBN). Cost: $506. Why: We are seeking donations so that Prostate Trek Inc. can accept Tax deductible donations from Australian companies and people from across Australia’s states and territories. https://asic.gov.au/for-business/registering-a-company/steps-to-register-a-company/registrable-australian-bodies/