[{"cust_name":"Anuj Kumar","product":[{"prod_name":"Robot","price":15000},{"prod_name":"Keyboard","price":65000}],"order_date":ISODate("2022-02-22T00:00:00Z"),"status":"processed","invoice":{"invoice_no":111,"invoice_date":ISODate("2022-02-22T00:00:00Z")}},{"cust_name":"Anil Agarwal","product":[{"prod_name":"Mouse","price":450},{"prod_name":"Keyboard","price":5050}],"order_date":ISODate("2022-02-24T00:00:00Z"),"status":"processed","invoice":{"invoice_no":112,"invoice_date":ISODate("2022-02-24T00:00:00Z")}}]

db.collection.find({$expr:{$gt:[{$sum:"$product.price"},10000]}})