Basically copy coupon, view price history or create e-mail price alert. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
2pcs Replacement Fatboy Glass Tank for GeekVape Zeus Dual /Zeus X RTA /Blitzen RTA 24mm / CREED RTA | $3.85 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Capacity: 2 (pre-installed) / 5ml, Diameter: 2.4cm, Thread: 510
Price history and price alert
Here is price history (for all/most countries) for Geekvape Blitzen RTA.
Price records source(s): Gearbest
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)).