Data published by Duesvo

4 datasets, each derived from named sources' own pages and re-read on a cadence, latest 2026-10-19.

How these are made

Every dataset starts as a charter that names the buyer's question and the sources by URL. Our fetch service reads each source's own page, and the sentence carrying the figure is kept exactly as printed, with the page and the day it was read.

A reviewer accepts or refuses every candidate sentence with the reason recorded, and the derivation is computed over one figure per source. A source read in full that publishes nothing is counted as not published, never filled in. Each dataset is re-read on its cadence, so the next read reports what moved.

Ams Pricing Index

The Ams Pricing Index carries 17 published figures read from 21 sources' own pages, from 5 to 490 USD, read 12 October 2026.

21 of the 50 named sources read in full publish a figure; 29 publish none, read 12 October 2026.

Download the CSV (21 rows) · JSON · Markdown

Membership Card Cost Index

The median published figure in the Membership Card Cost Index is 226.11 USD across 3 sources' own pages in USD (range 110.14 to 230 USD; 6 sources publish a figure), read 12 October 2026.

6 of the 17 named sources read in full publish a figure; 11 publish none, read 12 October 2026.

Download the CSV (6 rows) · JSON · Markdown

Membership Dues Benchmark

The Membership Dues Benchmark carries 4 published figures read from 4 sources' own pages, from 40 to 575 USD, read 12 October 2026.

4 of the 19 named sources read in full publish a figure; 15 publish none, read 12 October 2026.

Download the CSV (4 rows) · JSON · Markdown

Membership Retention Benchmark

The median published figure in the Membership Retention Benchmark is 47 percent across 4 figures from 3 sources' own pages (range 36 to 82 percent), read 12 October 2026.

3 of the 6 named sources read in full publish a figure; 3 publish none, read 12 October 2026.

Download the CSV (4 rows) · JSON · Markdown