Online shopping has made getting such items much easier by connecting buyers with a world of previously out-of-reach sources. Often, the best places to find specific parts are direct from the manufacturer or from eBay. However, manufacturers often don't want to deal directly with consumers or they are reluctant to sell single parts, and eBay transactions sometimes leave buyers hanging with sketchy sellers and dud deals. This has created opportunity for Amazon sellers who are willing to dig into Manufacturer Part Number (MPN) and include this detail in their listings.