Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Vertical View Angle: 178 Degree, Interface: HDMI, Built-in Speaker: No, Brightness: 250cd per square meter, Display Technology: Curved, DP, Simulated Surround Sound: Dolby Audio, Display Resolution Maximum: FHD 1080P, Material: ABS+ metal, Response Time: 1ms, Curvature: 1800R, Aspect Ratio: 16: 9, etc, Refresh Rate: 144Hz, Supports System: Linux, Hor izontal View Angle: 178 Degree, Windows, Model Number: C27G1, 5060Hz, Power Consumption: 100-240VAC, Monitor Contrast Ratio: 3000: 1, Display size: 27 inch, 3.5mm Audio, Panel Type: VA
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($343.79): BGCuponation10
2. ($380.99): 13f142
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGAOC111, BGCQ271GKK, AFfbG10, BG20121G1, BGCZ27G1, BGEUCG27G1, BGACCZ, Email5, 7d18f7, BGTT10, bGhOnEy10, BGAA27G1, bgshOOp10, BGMG0988, BGFIG01, BGUS1026, BGAOCM27, BGUSMON14, BGAES77, BGES77PT, BGUSA77, BGC27G130, BGUSA577, BGUSAOC30, BGAOCXB30, BGAOC2730, BGcdf683, BGAOC577, BG55c63e, BGc1b974, BG917362, BG3fe721
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – AOC C27G1 Monitor 27inch 1080p [EU] ($-3)
Price history and price alert
Here is price history (for all/most countries) for AOC C27G1 Monitor 27inch 1080p.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).