====== S3TA Pricing & “No charge if not faster” ======

**What it is:** The pricing rule and the special “no charge” behavior when S3TA won’t accelerate.

**Key rule (quote-level idea, paraphrased):**
  * Each accelerated upload is evaluated; if it’s **not likely faster**, **no S3TA charge** is applied for that transfer, and S3TA may be bypassed. 

**What you still pay (common exam trap):**
  * Even if “transfer charges” are $0 in that scenario, you can still pay:
    * S3 **request** cost (PUT)
    * S3 **storage** cost (storing 3 GB)
  * (This question asked only about **transfer charges**.)

**Hard words:**
  * *determine* /dɪˈtɝːmɪn/: xác định
  * *likely* /ˈlaɪkli/: có khả năng
  * *transfer charge* /ˈtrænsfɚ tʃɑːrdʒ/: phí truyền dữ liệu