Web searching for .com domain name availability and purchase price

I am in the process of selecting a domain name for my new business. I have started compiling a list of .com domains that I'm interested in buying in the future:
- some of the domains are not in use and available to buy for $10-20;
- some are in use and advertised for sale for $20++;
- some are in use with a real business and cannot be purchased.

I need help to search through each item on my list with this process: (1) check godaddy.com.au for .com availability record availability status and price details in table using Google Docs; (2) for domains that are in use, go to that website and see if the owner is advertising for sale, record in Google Docs; (3) for domains that are in use and cannot be purchased then record these in Google Docs. The Google Doc needs to be filled in and grouped with similar domain names together.

There are approx. 80 items on my list, this should take 2 hours to complete.