PowerA’s Joy-Con & Pro Controller charging dock for Nintendo Switch is on sale for $9.99. The device, which charges two Joy-Con controllers and one Nintendo Switch Pro controller at the same time, normally retails for $30. Click here for the product page.
The device is currently out of stock, but you can still order one while it’s still on sale. Amazon will ship it once it is re-stocked.
UPDATE: GameStop is also selling PowerA’s Joy-Con & Pro Controller charging dock for Nintendo Switch for $10, although they are themed versions: one is a Super Mario theme and the other a Legend of Zelda: Breath of the Wild theme. Click here for the Mario theme and click here for the Zelda theme.