diff --git a/README.md b/README.md
index ea82f03af..39f0978eb 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ Run [OpenClaw](https://github.com/openclaw/openclaw) (formerly Moltbot, formerly
 
 ## Requirements
 
-- [Workers Paid plan](https://www.cloudflare.com/plans/developer-platform/) ($5 USD/month) — required for Cloudflare Sandbox containers
+- [Workers Paid plan](https://www.cloudflare.com/plans/developer-platform/) ($5 USD/month) — required for Cloudflare Sandbox containers. Running the container incurs additional compute costs; see [Container Cost Estimate](#container-cost-estimate) below for details.
 - [Anthropic API key](https://console.anthropic.com/) — for Claude access, or you can use AI Gateway's [Unified Billing](https://developers.cloudflare.com/ai-gateway/features/unified-billing/)
 
 The following Cloudflare features used by this project have free tiers: