5 /000 /000: 1 Contrast Ratio, , GPU: Adreno 642L, RAM: 6GB, Touch Sampling Rate: 360Hz, Color Space: 100% DCI-P3, OS: Android 11; realme UI 2.0, Peak Brightness: 1000nits, 120Hz Refresh Rate, Resolution: 2400×1080 FHD+, Display Size: 6.43″ Samsung Super AMOLED Fullscreen (91.7% screen-to-body ratio), CPU: Snapdragon 778G / 6nm process / up to 2.4GHz clock speed / Octa-core CPU, Card Extend: Yes / Supports expandable storage up to 256GB, ROM: 128GB.
Go down and check coupons out. Remember to check price history if it is available. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): Tabby20, 2203ActiesNL, BG1efeb0, BG9cee67
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for Realme GT Master 5G NFC Snap778G 120Hz 6/128GB RU. The lowest price was: $299.
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)).