Update README.md

Author: 6

README.md

@@ -10,14 +10,12 @@ It only caches `POST` requests that have a JSON request body, as these tend to b
 
 Clone the repo and install dependencies.
 
-You will need to sign up for two services if you haven't already:
+You will need to sign up for two services (which both have free tiers):
 
 - [Cloudflare](https://www.cloudflare.com): Where our worker will be hosted.
 - [Upstash](https://upstash.com): We use Upstash's redis-over-HTTP service for storing cached OpenAI responses. Depending on your usage, you may try replacing Redis with [Cloudflare KV](https://developers.cloudflare.com/workers/runtime-apis/kv/) instead which is eventually consistent but will likely provide better read latency.
 
-Both Cloudflare and Upstash have generous free plans.
-
-Set up your redis secrets based on instructions in `wrangler.toml`.
+Finally, set up your redis secrets based on instructions in `wrangler.toml`.
 
 ### Usage