Elgato Wave:3 Premium USB Condenser Microphone $178.60 + Delivery ($178 Delivered for eBay Plus Member) @ EB Games eBay

Think its the cheapest :)

Specifications:
Capsule: 17 mm Electret
Polar Pattern: Cardioid
Resolution: 24-bit
Sample Rate: 48 / 96 kHz
Frequency Response: 70 - 20000 Hz
Sensitivity: -25dBFS (min gain) 15dBFS (max gain)
Max SPL: 120dB (140dB Clipguard engaged)
Dynamic Range: 95dB (115dB Clipguard engaged)
Interface: USB-C