Best Buy has their Insignia Type-C Wall Charger for $39.99. Regular price is $49.99.
No detachable USB-C cable but looks like a good size for this kind of power and this should be able to charge even the most power-hungry of devices (docked/undocked Switch, laptops incl MacBooks, etc)
*Works with most USB-C charged devices including Apple, Dell, HP, Asus, Acer, Lenovo, Samsung, Sony, and Toshiba.
*90W output charges almost all laptops (including the MacBook Pro) or docking stations with higher power needs.
*Reversible Type-C plug connects to devices in any direction.
*5' cable easily reaches your power outlet.
*USB power delivery ensures compatibility with smaller Type-C charged devices such as smartphones, tablets, and gaming consoles.
Open Box-Excellent condition also available for $35.99