Cornerstone Coatings API:  GET /tools/api/products?country=CA&format=html

You successfully got a response, change the params in the URL to get another real-time response.
See https://cornerstonecoatings.com/tools/api for full scheme.
Remove "&format=html" to get a JSON response.

{
  "success": true,
  "country": "CA",
  "pail_price": 115,
  "tote_price": 5750,
  "currency": "CAD",
  "currency_symbol": "$",
  "locale": "en-CA",
  "surfaces": [
    {
      "id": 0,
      "name": "Smooth Finished Concrete",
      "coverage_sqft_per_pail": 2000,
      "price_per_square_foot_at_2_coats": 0.12,
      "price_per_square_meter_at_2_coats": 1.29,
      "currency": "CAD",
      "currency_symbol": "$"
    },
    {
      "id": 1,
      "name": "Broom Finished Concrete",
      "coverage_sqft_per_pail": 1500,
      "price_per_square_foot_at_2_coats": 0.15,
      "price_per_square_meter_at_2_coats": 1.61,
      "currency": "CAD",
      "currency_symbol": "$"
    },
    {
      "id": 2,
      "name": "Polished Concrete",
      "coverage_sqft_per_pail": 800,
      "price_per_square_foot_at_2_coats": 0.29,
      "price_per_square_meter_at_2_coats": 3.12,
      "currency": "CAD",
      "currency_symbol": "$"
    },
    {
      "id": 3,
      "name": "Slipform",
      "coverage_sqft_per_pail": 1500,
      "price_per_square_foot_at_2_coats": 0.15,
      "price_per_square_meter_at_2_coats": 1.61,
      "currency": "CAD",
      "currency_symbol": "$"
    },
    {
      "id": 4,
      "name": "Existing Concrete",
      "coverage_sqft_per_pail": 1500,
      "price_per_square_foot_at_2_coats": 0.15,
      "price_per_square_meter_at_2_coats": 1.61,
      "currency": "CAD",
      "currency_symbol": "$"
    }
  ],
  "note": "Divide 2-coat prices by 2 to get 1-coat prices."
}