BIGWORDS.com 1.0 for Mac was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software is categorized as Education Tools. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
BIGWORDS saves students about $173 on multi-item textbook orders. WE DON'T SELL ANYTHING. We find the cheapest textbooks for you by comparing prices at every good online textbook retailer.
The BIGWORDS Uber-BOT uses Multi-Item Price Optimization, which maximizes promotions and minimizes shipping, providing the lowest total cost for your entire textbook order.