Tailwindintl via eBay offers the Casessary 4,900mAh Quick Charger 3.0 Galaxy Note 8 Protective Battery Case for $39.99. In-cart it drops to $29.99. With free shipping, that's the lowest price we could find by $16. It features pass-through charging.
Some of the changes we've made amid the COVID-19 outbreak are likely permanent.