You can get Blackview BV9300 Pro 8/256GB 15080mAh 33W NFC G99 for $249.99 using coupon code (in Banggood). You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Blackview BV9300 Pro Dual Display 16GB/24GB 256GB 64MP Camera 6.7 inch 120Hz 15080mAh 33W Fast Charging NFC Helio G99 IP68 IP69K Waterproof 4G Rugged Smartphone – Black 8GB 256GB
Latest coupon and price update (UTC):
Banggood ($249.99)
Banggood warehouse is located in Hong Kong. I couldn’t find any coupon for this product on latest product update. The question is – is it a good price? According to my database, the average price is $254.99 and current price is $249.99, so it’s probably a good price!
Link: Banggood product page
Price: $249.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGd2372c, BGREUBV9300
(these codes were not working in latest coupon update, but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Blackview BV9300 Pro 8/256GB 15080mAh 33W NFC G99 is here.
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)).