How much is a subscription to Manta?

Could you please elaborate on the pricing details for a subscription to Manta? I'm considering signing up but I'm unsure of the cost. Is there a monthly, quarterly, or annual subscription option? What does the subscription include in terms of services and features? Are there any discounts or promotional offers available for new subscribers? I'd also like to know if there's a free trial period to test out the platform before committing to a paid subscription. Thank you for your assistance in clarifying the pricing structure for Manta.