Calls: Add pricing page (#19746)

Author: renandincer

src/content/docs/calls/pricing.mdx

@@ -0,0 +1,22 @@
+---
+pcx_content_type: concept
+title: Pricing
+sidebar:
+  order: 15
+---
+
+Cloudflare Calls billing is based on data sent from Cloudflare edge to your application.
+
+Cloudflare Calls SFU and TURN services cost $0.05 per GB of data egress.
+
+There is a free tier of 1,000 GB before any charges start. This free tier includes usage from both SFU and TURN services, not two independent free tiers. Cloudflare Calls billing appears as a single line item on your Cloudflare bill, covering both SFU and TURN.
+
+Traffic between Cloudflare Calls TURN and Cloudflare Calls SFU or Cloudflare Stream (WHIP/WHEP) does not get double charged, so if you are using both SFU and TURN at the same time, you will get charged for only one.
+
+### TURN
+
+Please see the [TURN FAQ page](/calls/turn/faq), where there is additional information on speficially which traffic path from RFC8656 is measured and counts towards billing.
+
+### SFU
+
+Only traffic originating from Cloudflare towards clients incurs charges. Traffic pushed to Cloudflare incurs no charge even if there is no client pulling same traffic from Cloudflare.