The best mic under $100 might be this Fifine K688 #fifinek688
FIFINE K688 USB/XLR Dynamic Mic with Shock Mount, Touch-Mute
Fifine K688 - Valentine Music Centre
FIFINE K688 USB/XLR DYNAMIC MIC WITH SHOCK MOUNT, TOUCH-MUTE
FiFine K688 XLR/USB Dynamic Microphone - Micro Center
FIFINE's K688 USB/XLR Microphone – Streamer's Special or Bargain
FIFINE K688 USB/XLR Dynamic Mic with Shock Mount, Touch-Mute
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FIFINE : K688
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Watch before you buy FiFine K688 Dynamic USB/XLR Microphone