Blocked messages have a price, and it is rarely the registration fee that hurts. Put your own numbers in below to see what completing A2P 10DLC registration recovers each month.
The calculator does something simple. It multiplies the messages that currently fail to arrive by what each delivered message is worth to you. That gap is the real cost of skipping registration.
Unregistered and partly registered senders tend to cluster in the seventies. Some messages get through, which is exactly what makes the problem easy to miss. Once compliance is in place, the high nineties is the normal operating range.
It does not model your registration fees, and that is deliberate. A brand fee of a few dollars and a campaign fee in the tens of dollars per month are rounding errors next to the revenue in the delivery gap. If the uplift above looks meaningful, the registration cost is not the deciding factor.