Update logpush.mdx

Make logpush more clear that it is paid and what the pricing is

Author: kathayl

src/content/docs/ai-gateway/observability/logging/logpush.mdx

@@ -9,7 +9,7 @@ sidebar:
 import { Render, Tabs, TabItem } from "~/components";
 
 AI Gateway allows you to securely export logs to an external storage location, where you can decrypt and process them.
-You can toggle Logpush on and off in the [Cloudflare dashboard](https://dash.cloudflare.com) settings.
+You can toggle Logpush on and off in the [Cloudflare dashboard](https://dash.cloudflare.com) settings. This product is available on the Workers Paid plan. For pricing information, refer to [Pricing](/ai-gateway/reference/pricing).
 
 This guide explains how to set up Logpush for AI Gateway, generate an RSA key pair for encryption, and decrypt the logs once they are received.