Hmm, that's weird. I've never seen a more expensive online store than Amazon. All the small online shops I've visited offer lower prices for identical products. They also generally have a better selection within their niche so you don't end up overpaying for products that are way more capable than you need. It's also much easier to find products on those small online shops thanks to aggregators like geizhals.de

Meanwhile searching products on Amazon is still a shitshow and it's generally not possible to disable third party listings.