Latest update shows that Scanner Geiger costs 423.19 USD (in Banggood). Basically copy coupon, view price history or create e-mail price alert. What is best price?
Latest price update (UTC time):
Banggood (423.19 USD)
Banggood warehouse is located in China. Is it a low price? Well, according to CouponsFromChina database this price is the best in history (2 records). There are 2 active coupons in my database. Check it out.
Link: Banggood product page
Price without coupon: 459.99 USD
Coupon (423.19 USD): BGSPRING8OFF
Coupon (423.19 USD): BGHONEYSP
(CouponsFromChina.com tip: apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGAUGUST8, BGTOOS729, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Aliexpress
Click here… to search for CEM DT-9501 Radiation Scanner Geiger Counter on Aliexpress
Here are coupons that you can use.
Price history and price alert
Here is price history (for all/most countries) for CEM DT-9501 Radiation Scanner Geiger Counter.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).