Database
[{"AppraisedValueDisplay":"$35,000"},{"AppraisedValueDisplay":"$36,000"},{"AppraisedValueDisplay":"$41,700"},{"AppraisedValueDisplay":"$32,300"}]
Query
db.collection.aggregate([{"$project":{"AppraisedValueDisplay":{$replaceAll:{input:"$AppraisedValueDisplay",find:{$literal:"$"},replacement:""}}}},{"$project":{"AppraisedValueDisplay":{"$toInt":{$replaceAll:{input:"$AppraisedValueDisplay",find:",",replacement:""}}}}},{$match:{AppraisedValueDisplay:{$gt:30000,$lt:40000}}}])