I have checked all old coupons and price is 103.94 USD for DIDEEP 0.5L (in Banggood). Basically copy coupon, view price history or create e-mail price alert. What is the best price?
Latest coupon and price update (UTC):
Banggood (103.94 USD)
Banggood warehouse is located in China. Good or bad price? Hmmm, price is higher than average (which is 95.87 USD right now), so better set price alert down below… There’re 2 active coupon codes available! Awesome!
Link: Banggood product page
Price without coupon: 112.98 USD
Coupon (103.94 USD): BGSPRING8OFF
Coupon (103.94 USD): BGHONEYSP
(CouponsFromChina.com tip: this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): BG589b2e, BGAUGUST8, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8
(you can check these old coupons out, but these probably won’t work)
Aliexpress
Click here… to search for DIDEEP 0.5L Mini Scuba Tank Kit on Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for DIDEEP 0.5L Mini Scuba Tank Kit? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).