Lustre Optimizer is billed monthly through Paddle.com, our Merchant of Record.
You can try Lustre Optimizer free (3 optimizations) before subscribing, so you know what you're getting.
If you're not satisfied, contact us within 14 days of a charge at support@lustre.com.ar and we'll issue a full refund of that charge.
You can cancel your subscription at any time. Cancellation stops future charges; you keep access until the end of the current billing period.