S3 Express One Zone has prohibitive pricing for performance gains
5S3 Express One Zone costs $0.16/GB, twice the price of EBS general purpose SSD (gp3), making it an expensive option relative to its limited feature set and single-zone constraint. For the cost, it functions more like an expensive EBS with a half-implemented S3 API.
configAmazon S3S3 Express One ZoneEBS