Fetch Twilio inbound and outbound prices of a Twilio Phone number when calling/ receiving

Question

I am trying to find out what are the call prices before make / Receive calls. Let's say I have a Twilio phone number ABC and customer Phone number XYZ. I want to know the twilio pricing in below scenarios

1. When Calling from ABC to XYZ, what would be the outgoing price/ minute (Outbound call from Twilio Number)
2. When calling from XYZ to ABC, what would be the incoming price/ minute (Inbound call to Twilio Number)

I have checked this voice pricing article. There is a REST call mentioned like below.

number = client.pricing.v2 \
                       .voice \
                       .numbers('+15017122661') \
                       .fetch(origination_number='+15108675310')
Response: 
{
  "country": "United States",
  "destination_number": "+15017122661",
  "inbound_call_price": {
    "base_price": null,
    "current_price": null,
    "number_type": null
  },
  "iso_country": "US",
  "origination_number": "+15108675310",
  "outbound_call_prices": [
    {
      "base_price": "0.013",
      "current_price": "0.013",
      "origination_prefixes": [
        "ALL"
      ]
    }
  ],
  "price_unit": "USD",
  "url": "https://pricing.twilio.com/v2/Voice/Numbers/+18001234567"
}

But I couldn't figure out what exactly this response means. is the outbound_call_prices means the prices to make calls from +15108675310 to +15017122661? inbound_call_price means the prices to receive calls from +15017122661 to +15108675310?

Can someone help to understand this.