Price without delivery is good for a straight wireless charger from a name brand, even one in a different field.
Surcharges: 1.2% Card & PayPal, 2% AmEx
Whether it's worthwhile as a backup device depends on your use case. And perhaps your patience with their app.
$19 + similar delivery fees at Umart.
$90 at Amazon
Reviews aren't excellent (3.5) but seem to focus on its use as a wireless charger (don't use case, place it carefully), which are pretty common in my experience.
Credit to price hipster
From the website:
Capacity
64GB
Compatible phones:
iPhone™ 8/8 Plus and newer
Samsung Galaxy™ S6 and newer
Galaxy Note™ 5 and newer
Google Pixel™ 3
Any Qi compatible phone
In The Box
Ixpand Charger with built-in charger
Power adaptor with 6 ft (1.8m) cable
Quick Start Guide
Dimensions (L x W x H)
201.39mm x 19.51mm x 100.25mm
whats efficiency of wireless chargers? Still think wired is much better to mitigate loss while charging