RRP says $36.99, comes down to $19.54 and then a further 10% off by activating coupon at checkout.
Edit: coupon no longer applies so price is $19.54
I just purchased two of the Belkin Boost Wireless Chargers and realised I would need a dual USB-C wall charger. Looks like it should do the job.
Copy pasta from Amazon:
⚡【40W USB C Fast Charger】⚡40W USB C Fast Charger supports the Power Delivery and QC 3.0 fast charging functions with a TOTAL power of up to 40W. The USB-C port of our 40W USB C Fast Charger supports a maximum power output of 20W. The USB-A port of our 40W USB C Fast Charger supports a maximum power output of 15W.Our USB C Fast Charger Charge your iPhone devices from 0% to 58% in just 30 minutes. That's up to Aerostralia USB C Fast Charger 3X faster than an original 5W charger block.
⚡【Compact and Lightweight Design】⚡Measuring just 7.x 7x 5 cm and weighing only 94g, our USB C Charger is the perfect travel companion. Tuck it into your bag or pocket and stay powered up on the go.
⚡【Versatile Charging Options】⚡ 40W USB C Fast Charger supports a maximum output of 40 watt in total. With 2 USB A(15W Max) and 2 USB C (20W Max) ports, our charger offers versatile charging options, allowing you to charge multiple devices simultaneously with our 40W USB C Fast Charger.
⚡【What You'll Get】40W USB C Fast Charger with 1M/3FT 60W USB C Cable. When a USB A port and a USB C port are used together,USB A = 15W Max,USB C = 20W Max.Single port A with Our USB C Fast Charger is 15w max, single port C is 20w max.
⚡【Aerostralia Guarantee】⚡40W USB C Fast Charger comes with a 365-day guarantee, 90-day free replacement, and 30-day full refund. Please feel free to contact us if you have any questions about the 40W USB C Fast Charger.
⚡【High Speed Charging】⚡40W USB C Fast Charger offers fast and efficient charging up to 3X faster than a 5W charger. Charge your iPhone 13 up to 50% capacity in just 30 minutes with the original cable.
bought works well