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This iPhone XS Qi charging pad is only $5
https://www.cnet.com/news/this-iphone-xs-qi-charging-pad-is-only-5/
Elsewhere, they cost less. Like, less. For example, for a limited time, and while supplies last, XingYoo (via Amazon) has this Choetech Qi charging pad for just $4.99 with promo code J9YXNRAA.
Two things you should know about this pad: It's Qi- and ETL-certified, and it's not a fast-charger. That means it'll charge your iPhone at a "normal" rate: roughly as fast as the bundled one-amp wall charger and cord. (One excellent Amazon customer shared some detailed comparison data on this.)