Dimensions: , Brand: OnePlus, Material: PC, US: 85 g, Color: White, EU: 92 g, Output: 5V=2A/5V=6A max, EU: 52*30*70 mm, Weight: , Input: 100-240V~50/60Hz 1.2A, US: 52*31*52 mm.
You can create price alert here, copy coupons and view price history. You probably want to know what is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in Europe 
. I don’t really know if this price is reasonable, coz there’s no price history in my DB. Well, there is one coupon available right now.
Link: Banggood product page
1. ($22.87): BG85d5c6
this code has to be applied in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGOnePlus30W, BGAFF10OFF, BgoFErTaSchInA10, 13f142, BgcLuBofErtA10, BG11OnePlus30WCN, BG11OnePl30WCN, BG20CHARGER, BGMBCBLE, BGCuponation10, BGHONEY2110, BG743fdb, BANGGOODSD, BGCCARG, BGAlerabat, 2022ACTIESNL, Terence, 2203ActiesNL, BG1efeb0, MVC8SPRING, 8BGwbg2204
(probably won’t work, but you can try them out)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. China – OnePlus 30W Warp Charger ($-3)
Price history and price alert
There is only one database record (it was for $16.99), so you can’t see price history chart.
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)).