If you're looking to expand ports for USB devices or micro-SD cards and you don't need an ultra-low latency connection a $30 - $40 adapter will easily suffice. The right device for you will largely depend on how you plan to use your USB-C hub. While shopping for cheap USB-C adapters, you'll find many hubs and docks offer different things for your cash. If running multiple high resolution monitors at once is a key requirement on your Dell laptop, the D6000 USB-C hub is the one to go for. The D6000 looks firmly towards the future for display options by ditching the VGA port and instead focusing on support for up to three HD/4K monitors, or one 5K monitor - all running at a smooth 60fps. It can be used on old and new laptops thanks to an adapter on the connection cable allowing it to connect via the newer USB-C port, or a legacy USB-A slot.
The Dell D6000 dock is one of the best USB-C hubs around for the modern professional Dell user. No VGA support (not a problem for modern displays really)