Price elasticity on Amazon marketplaces
Media is attributed to the cent. Content is A/B-tested. But where deal funding goes, whether a cost increase gets passed on, and how deep a promo cuts — those decisions are still made on instinct. I built the instrument that measures them.
The weak end of the series: price effects exist in both directions, at roughly a fifth of what the strong categories show, in a market that answers in weeks.
Price cuts
0.19[0.03–0.47]Price increases
0.24[0.08–0.42]Read the report →
One category each, newest first.
A small, slow niche: cuts work modestly, increases show no demonstrable effect at all, and the median competitor answer takes five days.
cuts 0.50 [0.22–0.86] reliable · increases 0.21 [−0.22–0.57]
The strongest price response in the series to date: a full staircase in both directions, on the biggest shelf measured so far.
cuts 1.11 [0.97–1.25] · increases 0.93 [0.77–1.10] · reliable
The first category with a demonstrable segment order: the expensive shelf dances to price, the cheap shelf barely moves — in both directions.
cuts 1.00 [0.82–1.20] · increases 0.78 [0.61–0.97] · reliable
A symmetric category with one demonstrable gradient underneath: the more expensive the bottle, the harder a price increase hits.
cuts 0.54 [0.42–0.66] · increases 0.50 [0.35–0.66] · reliable
The Quarterly · Q3 2026
Twelve categories on amazon.de, measured the same way, in one document. The collection puts them side by side and asks what holds across all of them.
Each weekly report measures a single category. The Monthly is where they get compared, and it carries the quarterly report when one is published.