501 hand-researched B2B & AI tools. 848 cost-trap flags — per-seat, usage-metered, quote-only, renewal jumps, real free tiers — and every single flag carries the evidence sentence it was derived from. Free to use with attribution.
Since July 2026 we archive the pricing page of every tool we cover and compare each month against the last. Of the 132 pages we captured in both 2026-08 and 2026-09, 19 changed an amount and 113 did not — a monthly change rate of 14.4%.
The unchanged rows are in the file on purpose: a count without a denominator is not a statistic. Each changed row carries the price lines exactly as we captured them in both months, so the figure can be checked rather than taken on trust. The comparison flags candidates; a person reads the raw lines before anything is published. See the registry and how we review.
| Flag | Tools |
|---|---|
| quote-only pricing | 33 |
| per-seat pricing | 125 |
| usage-metered | 255 |
| renewal jump | 9 |
| add-ons extra | 141 |
| annual lock-in | 116 |
| real free tier | 169 |
| Tool | Category | From | Flags |
|---|---|---|---|
| 1Password | IT & Productivity | $3.99/mo | per-seat pricing, annual lock-in |
| 800.com | Communication & Voice | $19/mo | — |
| accessiBe | IT & Productivity | $59/mo | — |
| ActiveCampaign | Growth & Revenue | $15/mo | add-ons extra, annual lock-in |
| AdCreative.ai | Growth & Revenue | $39/mo | usage-metered |
| ADP | HR & People | — | quote-only pricing, per-seat pricing |
| Adwisely | Growth & Revenue | $49/mo | usage-metered |
| AfterSell | Growth & Revenue | $34.99/mo | usage-metered |
…and 493 more. Explore interactively in the Atlas.
CC BY 4.0. Use it in articles, research or products — just credit “AIBuilder Marketplace” with a link to aibuildermarketplace.com/atlas/.
Methodology: flags are rule-derived from our hand-researched pricing notes; we publish the evidence sentence with every flag and never invent numbers. Entry prices are what we found at research time (2026-07) — always check live pricing. How we review →
This dataset contains no affiliate links. The Atlas and our reviews do carry them (disclosed on every page); this page exists so the research itself is free to reuse.