types = {
        'db.t1.micro': 0.615,
        'db.m1.small': 1.7,
        'db.m1.medium': 3.75,
        'db.m1.large': 7.5,
        'db.m1.xlarge': 15,
        'db.m4.large': 8,
        'db.m4.xlarge': 16,
        'db.m4.2xlarge': 32,
        'db.m4.4xlarge': 64,
        'db.m4.10xlarge': 160,
        'db.r3.large': 15,
        'db.r3.xlarge': 30.5,
        'db.r3.2xlarge': 61,
        'db.r3.4xlarge': 122,
        'db.r3.8xlarge': 244,
        'db.t2.micro': 1,
        'db.t2.small': 2,
        'db.t2.medium': 4,
        'db.t2.large': 8,
        'db.m3.medium': 3.75,
        'db.m3.large': 7.5,
        'db.m3.xlarge': 15,
        'db.m3.2xlarge': 30,
        'db.m2.xlarge': 17.1,
        'db.m2.2xlarge': 34.2,
        'db.m2.4xlarge': 68.4,
        'db.cr1.8xlarge': 244,
    }
