Amazon and eBay both provide an online marketplace for sellers to put their used band saws and other power tools up for sale or auction. These sites give posted goods huge exposure and let buyers search for them via keywords.
Amazon provides a direct market to secondhand buyers interested in power tools. Sellers can determine who will see their goods based on the words included in an item's description, which then factor into search results.
eBay is an online auction house where buyers bid on posted goods. Sellers can drive competition on used band saws and other heavy power tools by posting for sale when the market is thin.