"a buon mercato" meaning in Italian

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "bon marché"
      },
      "expansion": "French bon marché",
      "name": "cog"
    }
  ],
  "etymology_text": "Compare French bon marché, à bon marché.",
  "head_templates": [
    {
      "args": {
        "inv": "1"
      },
      "expansion": "a buon mercato (invariable)",
      "name": "it-adj"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Italian entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "It is really cheap.",
          "text": "È davvero a buon mercato.",
          "type": "example"
        }
      ],
      "glosses": [
        "cheap"
      ],
      "id": "en-a_buon_mercato-it-adj-xvVWBG4M",
      "links": [
        [
          "cheap",
          "cheap"
        ]
      ],
      "synonyms": [
        {
          "word": "economico"
        }
      ],
      "tags": [
        "invariable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a‿bˈbwɔm merˈka.to/"
    }
  ],
  "word": "a buon mercato"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "fr",
        "2": "bon marché"
      },
      "expansion": "French bon marché",
      "name": "cog"
    }
  ],
  "etymology_text": "Compare French bon marché, à bon marché.",
  "head_templates": [
    {
      "args": {
        "inv": "1"
      },
      "expansion": "a buon mercato (invariable)",
      "name": "it-adj"
    }
  ],
  "lang": "Italian",
  "lang_code": "it",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        "Italian adjectives",
        "Italian entries with incorrect language header",
        "Italian indeclinable adjectives",
        "Italian lemmas",
        "Italian multiword terms",
        "Italian terms with IPA pronunciation",
        "Italian terms with audio links",
        "Italian terms with usage examples",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "It is really cheap.",
          "text": "È davvero a buon mercato.",
          "type": "example"
        }
      ],
      "glosses": [
        "cheap"
      ],
      "links": [
        [
          "cheap",
          "cheap"
        ]
      ],
      "synonyms": [
        {
          "word": "economico"
        }
      ],
      "tags": [
        "invariable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/a‿bˈbwɔm merˈka.to/"
    }
  ],
  "word": "a buon mercato"
}