Basic Web Research

I have a spreadsheet with the names of 450 companies located in Australia. I need the contact details for each of these companies - such as postal address, suburb, postcode, phone number, email and fax number. The postal addresses will be the most important, and I am expecting to achieve 90%+ success on the addresses. For the phone/email/fax - this will be less important and only necessary to input into the spreadsheet if it comes up in the web searches. I am only expecting 50% of the phone/email/fax details to be successfully obtained. For the vast majority of these contacts the names and details will be on public websites or Government registries (such as ASIC or ABN Search etc). I can give some tips on this front. I have attached the spreadsheet and I am interested in a lump sum amount to go through the list and complete all the missing information (noting the expectations for postal and phone/email/fax success rates above). To make sure you have read these instructions and understand the job, please include the word "Koala" in your subject line response. If you dont include the word I will assume you have not read the instructions and will not consider you.