This is a great example of doing one niche incredibly well. Another example I've seen of doing this well is motorcycle parts[1]. You select your motorcycle, it

This is a great example of doing one niche incredibly well. Another example I've seen of doing this well is motorcycle parts[1]. You select your motorcycle, it presents you with a set of schematics of the bike split by function - for example you pick the Cam chain tensioner. You pick the schematic for the part you want and it'll show you the schematic with every part numbered, and a numbered list beside it with the name of the part, the part number, the price and a "buy" button. So simple, works absolutely perfectly. [1]:https://www.hondaparts-direct.com/oempartfinder?aribrand=HOM&arian=motorcycle#/Honda_Powersports/CB500XAAC_(20)_MOTORCYCLE%2c_THA%2c_VIN%23_MLHPC645-L5100001_TO_MLHPC645-L5199999/CAM_CHAIN%40TENSIONER/4bd75a51-6e49-4569-8368-1fa248471acb/22a5739c-665e-4b37-b8fa-91c29a91cc99/y https://www.hondaparts-direct.com/oempartfinder?aribrand=HOM...