DRAM and NAND flash are the components that set the cost floor beneath consumer electronics built to store and stream content. When rates on those chips move up the supply chain, the pressure reaches device makers' income statements before it arrives at retail price tags. Amazon has now passed that cost through, raising prices across its Echo, Kindle, Fire TV, and Eero product lines by as much as 60 percent. In a statement given to Fortune, the company attributed the moves to significant increases in memory and storage component costs.

The sharpest repricing landed at the low end of the catalog, where margin buffers are thinnest. The entry-level Echo Dot smart speaker rose from $49.99 to $79.99, a 60 percent increase. The Fire TV Stick 4K Max moved to $84.99, a gain of more than 40 percent. The base Kindle climbed nearly 37 percent to $149.99. Amazon's Echo Dot Max, which launched last year, moved from $99.99 to $119.99.

Where this sits competitively

Apple raised its HomePod Mini from $99.99 to $129 this summer. Before those two separate moves, both the HomePod Mini and the Echo Dot Max carried a $99.99 price point. Amazon's repricing to $119.99 now places the Echo Dot Max $9.99 below Apple's speaker, a gap that opened only this summer.

The pricing behavior at the low end of a hardware lineup follows a pattern common to component cost cycles. A device at $50 carries a narrower absolute margin than a device at $200. Any given percentage increase in component costs extracts proportionally more from the cheaper product. The Echo Dot, at $49.99 before the change, absorbed the full arithmetic of that relationship, recording the largest percentage increase in the lineup at 60 percent. Eero networking products were also repriced, though Amazon's statement to Fortune did not break out specific Eero figures. The company did not specify which memory or storage categories drove the increases beyond its broad cost attribution. The base Kindle now sits at $149.99.

Related reading