Database
db={collection:[{_id:"abc",Descreption:"abc",NewPrice:3},{_id:"xyz",Descreption:"xyyy",NewPrice:1},{_id:"123",Descreption:"yyy",NewPrice:344},{_id:"abcer",Descreption:"abc",NewPrice:3},{_id:"rrr",Descreption:"tttt",NewPrice:78},{_id:"eee",Descreption:"uuu",NewPrice:7}]}
Query
db.collection.aggregate([{$group:{_id:{des:"$Descreption",price:"$NewPrice"},count:{$sum:1},data:{$push:"$$ROOT"}}},{$match:{_id:{$ne:"null"},count:{$gt:1}}},{$project:{Descreption:"$_id",data:1,_id:0}}])