Brevo Starter Plan Annual Bill Through The Roof

My next bill for Brevo Starter (40k) email per month (that’s a limit, I don’t usually reach that), is over £450.

Considering Twilio Sendgrid charge $19.95 per month for 50k emails, and Turbo SMTP charge $199 for a year at 50k per month, I’m struggling to understand why the starter plan is so expensive.

Is there a cheaper option on Brevo where I can just send transactional emails and not need to have AI and conversation stuff in my account?