If you can find a unique product or part number for the product, searching that will often bring up a short list of sites that sell that exact product.

I haven’t bought a single thing off Amazon in over ten years, since they pissed me off. I don’t even comparison shop Amazon to see whether I’m paying more, that’s how much I hate them. I’ll pay more to not use Amazon. Also, nothing I’m buying online is something I can’t do without, and sometimes I just don’t buy it--shocking, I know.