Acer Predator XB273UGS 27" QHD Gaming Monitor $699 (Was $999) + Shipping / Pickup @ JB Hi-Fi

Great Deal i would say. Cheapest i could see was $819 with Extreme PC

Key features
• 27 inch (WQHD) 2560 x 1440 @ 144 Hz (170 Hz Overclocking mode)
• NVIDIA G-Sync Compatible
• Response time: 1 ms
• Brightness: Native 350nits, HDR400 mode: 400nits
• Viewing angles: 178° Horizontal; 178° Vertical