Are Moto Mods Worth It?

Moto Mods are magnetic attachments that fasten onto the rear of the Moto Z and Moto Z Force smartphones to expand their functionality. There are three main Moto Mods available today: Moto Insta-Share Projector, JBL SoundBoost Speaker, and Incipio offGrid Power Pack. For $299, $79, and $59 respectively, do you think Moto Mods are worth it?