Thumb Score: +19

Depstech via Amazon [amazon.com] has DEPSTECH NTC55 2K 2560×1440P Dual-Lens Endoscope Camera on sale for $28.99 – 33% with promo code JR5LCV3K = $19.42. Shipping is free w/ Prime or on orders $35+.

Note: Requires the free DEPSTECHCAM app (iOS/Android) to operate. Not compatible with Android devices lacking OTG support — enable OTG before use.