YHC US (98 percent lifetime positive feedback) via Amazon offers the RCA 6-in-1 USB-C Hub for $20.29 when the 30KB9UPI code is applied at checkout. Orders that exceed $25 will qualify for free shipping if you are not a Prime member. That’s 30% off the typical rate and it’s the lowest offer we’ve been following.
There are 3x USB-A, 4K HDMI, microSD, and standard SD ports offered by this hub. It will not only work with MacBooks, but it will also work with 2018 iPad Pro, Chromebooks, Windows PCs, and more. 4.8/5 stars rated.
Hubs can be handy, but just embrace the new standard and buy compatible cables can be better in some cases. The USB-C to HDMI Cord Cable Matters is $20 and supports 4K at 60Hz. It is six feet long in most situations, providing ample reach.