Any

https://h.api.crmls.org/RESO/OData/Property?$filter=PropertyUnits/any(d:d/UnitKeyNumeric%20gt%208000)&$count=true

{
  "@odata.context": "https://h.api.crmls.org/RESO/OData/$metadata#Property",
  "@odata.count": 257822,
  "value": [
    {
      "@odata.etag": "W/\"MjAxMy0wMi0yMVQxMDo0OTowNC4zNy0wODowMA==\"",
      "AccessibilityFeatures": null,
	  .
	  .
	  .
      "ZoningDescription": null
    }
  ],
  "@odata.nextLink": "https://h.api.crmls.org/RESO/OData/Property?$filter=PropertyUnits/any(d:d/UnitKeyNumeric%20gt%208000)&$count=true&$skip=100"
}

All

https://h.api.crmls.org/RESO/OData/Property?$filter=PropertyUnits/all(d:d/UnitKeyNumeric%20le%2010000)