Source-linked reports: Amounts and outcomes come from the original reports and linked replies.

R2iasbt-r2-ia-backup-bucket

iasbt: a 163 MB backup bucket set to Infrequent Access by mistake, $9.91.

Community user iasbt says a first-time configuration mistake set a tiny 163 MB backup bucket to Infrequent Access instead of Standard, producing an accidental $9.91 charge for R2 Infrequent Access operations. The author switched the bucket back to Standard and submitted ticket #02093003 asking for a one-time courtesy refund or credit; the ticket had no response after 10 days.

What happened

Reported cause: Unknown
Incident date: Date not recorded
First reported: 2026-05-06
Billing outcome: Request submittedAuthor-reported
Case progress: Not established
Public Cloudflare reply: Not linked

Latest reported outcome

The author requests a courtesy refund or credit via ticket #02093003; no reply is reported.

View this update in the timeline

Original sources

Original Cloudflare Community post

Each entry links to the report or reply it describes.

Case timeline

2026-05-06
Author escalates a $9.91 R2 IA ticket
Open original source
The author says a backup bucket was set to Infrequent Access by mistake, causing $9.91, and ticket #02093003 has had no response for 10 days.

Author experienceDurable Objects +3

Designing a poker game on Durable Objects so idle time costs nothing

Philip Atkinson describes the architecture of his multiplayer poker game on the Cloudflare Developer Platform and the cost rules he follows: archive finished games out of Durable Object storage, hibernate WebSockets, wake with alarms and treat logging as a cost decision.

Durable Objects

Lion Brain: a Durable Object alarm loop from an AI-coding bug wrote about 250 million rows, roughly $210.

Replying in another user's Community thread, bennygoldstein says a bug written by an AI coding tool made a Durable Object alarm in their Lion Brain app re-index the same data every few seconds on October 10 and 11, 2026, writing about 250 million rows and costing roughly $210 in overage on Workers Paid. He says he only found out from the budget alert email, which never pauses anything, and that he opened a billing case asking for a one-time courtesy credit and a real hard spending cap.

Official docsAccount-wide usage-based products

Budget alerts

Cloudflare documents account-wide spend alerts and their notification limits.

Durable Objects

A software defect drove a Durable Objects usage spike and a $3,800+ invoice; support declined a refund under standard policy.

Cloudflare Community user dev.in1 says a one-time software defect in their application sharply increased Durable Objects usage, mainly Storage Rows Written and Requests, producing an invoice of more than $3,800 for the September 2026 billing period. The author says the issue was identified, fixed and redeployed, with monitoring and alerts added. They report that support confirmed the usage was metered but said usage-based charges are not refundable under the standard policy, and they ask for escalation for a one-time courtesy adjustment.

Community resourceWorkers +3

Cloudflare Cost Guard: a read-only agent skill for runaway-billing audits

Layer Cache’s open-source agent skill, announced by Domenico (@purposelyblnk), audits a Cloudflare codebase from source alone for paths that can run up uncontrolled billable usage, and reports findings without changing code or calling Cloudflare.

Author experienceWorkers +4

Estimating a SaaS bill on Cloudflare Workers by billing unit, not by MAU

李辰 of 小李出海笔记 argues that a Cloudflare SaaS bill cannot be read off monthly active users and walks through Workers, D1, R2, Workers AI and Vectorize by their own billing units, with an estimation template and a checklist.