$144.70 – DIDEEP X4000Pro Diving Set 1L Oxygen Air Tank (Banggood, Aliexpress: Bottle Capacity: 1L, Name: Diving Oxygen Cylinder Set, Underwater Breathing Time: about 15-20min, Color: Yellow, Max Pressure: 3000PSI/200BAR/20MPa, Bottle Material: Aviation Aluminum, Bottle Size: 40.2×8.5cm/15.83″x3.35″ (the best price with coupon)).
The coupon price for DIDEEP X4000Pro Diving Set 1L Oxygen Air Tank is $144.7 (in Banggood). Just check coupons out (with price alert and history). Do you want to know what the best price is?
Latest coupon code price check (UTC time):
Banggood ($144.70)
Banggood warehouse is located in China. I don’t think there is an active coupon right now – at least in my database. Good or bad price? Well, this price is higher than average price ($131.60)
Link: Banggood product page
Price: $144.7
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGb5BG, 7bcdf9, BG10OFFAFF1, BGAlerabatod, BGe46870, BG2cf2d8, 8BGwbg2204, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, BG2952d8, BGfc8a9a, BGcb2085, BG52cd24, BGissam15wts, BG073996, BGc363fd, BG00c906, BG8OFFCOUPON, JanBGCoupon8, BGb64cd9, BG9dce6b, BG589b2e, BGMARCHSALE, BG7db998, BGAUGUST8, BG6337f9, BGCAPITALOS8, BGCOUPERT8, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8, BGSPRING8OFF, BGHONEYSP, BGESJY8
(these coupons are old, so probably won’t work)
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
Here is price history (for all/most countries) for DIDEEP X4000Pro Diving Set 1L Oxygen Air Tank. The lowest price was: $119.99.
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)).