{"@context":"https://schema.org","@type":"Dataset","creator":{"@type":"Organization","name":"BirkinBagStock","url":"https://www.birkinbagstock.com"},"creditText":"Source: BirkinBagStock.com Resale Price Index","dateModified":"2026-06-05T13:25:47.474852+00:00","description":"Daily repeat-listing price index for pre-owned Herm\u00e8s Birkin bags, tracking the same individual listings across merchants over time.","headline":"The BirkinBagStock Resale Price Index softened 0.08% from 2026-05-30 to 2026-06-05, measured across 2,688 repeat-listed Herm\u00e8s Birkin bags (102 marked down, 7 marked up).","index":{"as_of_date":"2026-06-05","baseline_date":"2026-05-30","baseline_median_usd":28000.0,"by_size":{"25":{"flat":897,"index":99.958,"matched_sample":932,"mean_change_pct":-0.042,"median_change_pct":0,"moved_down":34,"moved_up":1},"29":{"flat":30,"index":99.492,"matched_sample":32,"mean_change_pct":-0.508,"median_change_pct":0,"moved_down":2,"moved_up":0},"30":{"flat":959,"index":99.904,"matched_sample":1005,"mean_change_pct":-0.096,"median_change_pct":0,"moved_down":42,"moved_up":4},"35":{"flat":559,"index":99.908,"matched_sample":583,"mean_change_pct":-0.092,"median_change_pct":0,"moved_down":22,"moved_up":2},"40":{"flat":48,"index":99.995,"matched_sample":49,"mean_change_pct":-0.005,"median_change_pct":0,"moved_down":1,"moved_up":0},"42":{"flat":37,"index":100.0,"matched_sample":37,"mean_change_pct":0.0,"median_change_pct":0,"moved_down":0,"moved_up":0}},"change_since_baseline_pct":-0.078,"current_index":99.922,"days_tracked":7,"flat":2579,"matched_sample":2688,"median_change_since_baseline_pct":0,"methodology":"Repeat-listing index. Baseline = first captured day (index 100). Each day's index tracks the median price change of the same individual SKUs observed on both the baseline day and that day, so changes in which listings are in stock do not move the index. Source: BirkinBagStock daily cross-merchant price capture.","moved_down":102,"moved_up":7,"series":[{"date":"2026-05-30","flat":2688,"index":100.0,"matched_sample":2688,"mean_change_pct":0.0,"median_change_pct":0,"moved_down":0,"moved_up":0},{"date":"2026-05-31","flat":2680,"index":99.973,"matched_sample":2688,"mean_change_pct":-0.027,"median_change_pct":0,"moved_down":7,"moved_up":1},{"date":"2026-06-01","flat":2617,"index":99.973,"matched_sample":2688,"mean_change_pct":-0.027,"median_change_pct":0,"moved_down":13,"moved_up":58},{"date":"2026-06-02","flat":2662,"index":99.955,"matched_sample":2688,"mean_change_pct":-0.045,"median_change_pct":0,"moved_down":22,"moved_up":4},{"date":"2026-06-03","flat":2638,"index":99.922,"matched_sample":2688,"mean_change_pct":-0.078,"median_change_pct":0,"moved_down":46,"moved_up":4},{"date":"2026-06-04","flat":2583,"index":99.921,"matched_sample":2688,"mean_change_pct":-0.079,"median_change_pct":0,"moved_down":100,"moved_up":5},{"date":"2026-06-05","flat":2579,"index":99.922,"matched_sample":2688,"mean_change_pct":-0.078,"median_change_pct":0,"moved_down":102,"moved_up":7}],"status":"ok"},"isAccessibleForFree":true,"license":"https://creativecommons.org/licenses/by/4.0/","name":"BirkinBagStock Resale Price Index (matched repeat-listing)","source":"BirkinBagStock.com","temporalCoverage":"2026-05-30/2026-06-05","url":"https://www.birkinbagstock.com/data/birkin-price-appreciation-index.json"}