Bret Fisher's Blog and Newsletter Archive
Investor Due Diligence Report
by Beth Fisher
ghostTechnology
Mostly just old DevOps posts and updates on my YouTube, podcasts, and courses.
12K
~0%
Subscriber count is a platform estimate
Pricing
$6/mo
$60/yr annual option
$6K
~1.2K est. paid subs
$3K/mo – $10K/mo(±50%)
Previously Bi-weekly
0.7 posts/week
69/100
Consistent (~11.2d avg)
| Newsletter | Subscribers | Weekly Growth | Price | Platform |
|---|---|---|---|---|
| The System Design Newsletter | 239K | +0.3% | $17.5/mo | substack |
| [ Center for Humane Technology ] | 181K | +0.4% | Free | substack |
| The Developing Dev | 105K | N/A | Free | substack |
| Coding Challenges | 93K | N/A | $8/mo | substack |
| Month | Subscribers | Est. Revenue | Change |
|---|---|---|---|
| Feb 2026 | 12K | $6,360 | — |
| Mar 2026 | 12K | $6,360 | ~0% |
| Apr 2026 | 12K | $6,360 | ~0% |
| May 2026 | 12K | $6,360 | ~0% |
| Jun 2026 | 12K | $6,360 | ~0% |
Platform Dependency
Uses ghost platform
Publishing Consistency
Variable publishing frequency
Key Person
Single-author publication — key-person dependency
Revenue Model
Active paid subscription tier
Subscriber threshold
12K subscribers — above the 2K category median for first paid tier
Has paid tier
Active paid subscription offering
Peer monetization
100% of 82 similar-size peers in Technology have paid tiers
Pricing position
$6/mo vs $5/mo category median (783 newsletters)
| Date | Monthly | Annual |
|---|---|---|
| Feb 2026 | $6 | $60 |
Disclaimer: This report is generated automatically based on publicly available data and proprietary estimation models. Estimated subscriber counts are derived from engagement patterns and should be verified through direct disclosure. Revenue estimates are based on known pricing and estimated paid subscriber counts. This report is for informational purposes only and should not be the sole basis for investment decisions.
| Wonder Tools |
| 86K |
| N/A |
| $8/mo |
| substack |