Been using https://www.rockauto.com/ for auto parts for years. Pay attention to which warehouse it ships from if buying multiple things - often getting a more expensive part from the same warehouse as other stuff is cheaper in the long run.
Electronics you can try newegg.com (had my CC compromised there before so get a 2nd account for online shit - you should anyway).
Clothes - Normally I would say Kohls but I don't give them money anymore - they would not let me in their store w/o a mask.
It is easy to search around, just be careful about payments (see above) and maybe you will discover better places.
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