How to Build a How Much Calculator

async function getHowMuchKeywords(seed, options = {}) {
  const { country = 'us', language = 'en' } = options;
  const prefixes = [
    `how much ${seed}`,
    `how much does ${seed}`,
    `how much is ${seed}`,
    `how much do ${seed}`,
    `how much for ${seed}`,
    `how much to ${seed}`
  ];

  const suggestions = [];
  for (const prefix of prefixes) {
    const url = `https://suggestqueries.google.com/complete/search?client=firefox&q=${encodeURIComponent(prefix)}&hl=${language}&gl=${country}`;
    const res = await fetch(url);
    const [, results] = await res.json();
    suggestions.push(...results);
  }

  // Deduplicate and score by estimated volume
  const unique = [...new Set(suggestions)];
  return unique.map(kw => ({
    keyword: kw,
    intent: classifyIntent(kw), // informational, commercial, transactional
    estimatedCPC: estimateCPC(kw)
  }));
  }

  function classifyIntent(keyword) {
  if (/cost|price|worth|pay|charge|fee/.test(keyword)) return 'transactional';
  if (/salary|earn|make|save/.test(keyword)) return 'commercial';
  return 'informational';
  }