Yi Dome Camera https://www.amazon.com/dp/B01CW4BG4K?ref=emc_b_5_t

• $40!!!!!!!!!!!!!!!!!!!!

Heard many good things and it has:

• 720p High-definition, 112° wide-angle advanced glass lens combined with 345° horizontal & 115° vertical rotation range create a complete 360° coverage.
• Responsive and advanced microphone with a built-in anti-noise filter for a clear 2-way Audio experience. Intercom Mode: one party to talk and listen at a time or Hands-free Mode: both parties talk and listen freely for maximum flexibility.

And if you want 1080p, you can pay $20 more https://www.amazon.com/dp/B01CW4BLG8?ref=emc_b_5_i