[{"name":"robe simple","price":4.9,"unit":"piece","price_type":"flexible","updated_at":ISODate("2019-12-30T09:06:35Z"),"created_at":ISODate("2018-12-24T14:23:25Z"),"conciergerie_ids":["5c20ebefedcfbc9a103erfefeef921a9e2","5c20ebdefsfcfbc9a1efsefe03b921a9e3","5c20ebdsefefcfbc9a1sefef03b921a9e4"],}]

db.collection.aggregate([{$match:{$and:[{"conciergerie_ids":"5c20ebdcfbc9a103b921a9ef"},{created_at:{$gte:ISODate("2019-01-01T00:00:00Z")}}]}},{$group:{_id:null,total:{$sum:"$price"}}}])