I took his advice and went to the Cost Anomaly Detection console and started to set up an alert for my $0.56/mo S3 charges. I want individual alerts, so I have

I took his advice and went to the Cost Anomaly Detection console and started to set up an alert for my $0.56/mo S3 charges. I want individual alerts, so I have to use SNS. I want a text message for an alert, so I am pushed into creating a 10DLC origin (even while in the SMS sandbox). A 10DLC registration is $50 for a brand or company, and $50 for each "campaign", plus $15/mo for each campaign. Am I missing something?