Recently bought this, not really on sale or anything but I thought I'd share this one seeing as Officially Licensed Nintendo Switch Joy Con and Pro Controller Charging Dock $28 @ EB Games was reasonably popular. You also get a USB-C Cable with it which is pretty neat, seeing as USB-C cables can be pricey.
Made by Orzly who are pretty reputable. This one can charge 4 Joy Cons at or 2 Joy Cons and a Pro Controller at once.
Free delivery via Amazon Prime since most of us are at least using the trial right now.
Sharestuffilikethatisntreallyadeal.com.au