BOYA BY-WM6 UHF Omni-Directional Wireless Mic.
In comparison to other similar systems on the market this is a low cost option. The Boya has a nice range, comes with transmitter and receiver all in a nice hard carrying case. You do need to be a bit gentile with the system as it can break easily. Check out our video review on YouTube
Fifine Studio Usb Condenser Microphone
Low cost general purpose microphone that is plugged directly into the USB port on a computer. Works well for recording voice over. The little stand is basic and sits to low, and will most likely need replacing.
The Movo WMIC50 is an inexpensive option for someone on a budget in need of a wireless microphone. Watch our full review on YouTube