Update README.md

int128 · web-flow · commit f8b2dc928430 · 2019-10-10T17:49:37.000+09:00
diff --git a/README.md b/README.md
@@ -6,7 +6,7 @@ Features:
 
 - Providing NAT for private subnet(s)
 - Auto healing using an auto scaling group
-- Saving cost using a spot instance
+- Saving cost using a spot instance (from $1/month)
 - Fixed source IP address by reattaching ENI
 - Supporting Systems Manager Session Manager
 
