Newegg has the " [Qualcomm Certified Quick Charge 3.0] ORIC0 TS1-BK 10000 mAh QC3.0 & USB-C / Type-C Port Portable Charger External Battery Pack Power Bank for Phones, Tablet and More [newegg.com] " on sale for $21.99. There is a coupon code (TEACCPD50) available for an additional 50% off to make it $10.99. There is shipping of $7.73 for one item, but free shipping is available for a pre-coupon total of $50+. That means you can buy 3 for a total of $32.98.
The previous version of this model (no QC 3.0) sells on Amazon for $26.99 and has 4.3/5 stars. Seems like a solid deal to me, so I went for 3 of them.
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