QC2.0 mode: Stepped 5v/2.4A, 9V/2A (18W Max)., QC3.0 mode: Variable 3.6V-12V with 200mV incremental dynamic regulation., PD mode: Stepped 5v/2.4A, 9V/2A and 12V/1.5A (18W Max)., PD/QC+2.4A 30W Powerful Output, Standard Fast 2.4A Mode: 5V/2.4A. (12W Max).
Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
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 China.
Link: Banggood product page
1. ($14.13): BG20CHARGER
2. ($15.89): BGAFF10OFF
3. ($15.89): BgcLuBofErtA10
4. ($16.66): 13f142
you should apply the coupon 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): 12blitzw, BGs11tc17, BGss10%bw, AFfbG10, bgsbw11, BGPLTC17S, BGpltc17s, BGbws11tc, BGVDay10%off, bGhOnEy10, BGXMI15, BgoFErTaSchInA10
(probably won’t work, but you can try them out)
Price history and price alert
Here is price history (for all/most countries) for BlitzWolf BW-S11 Charger With BW-TC17 3A Type-C to Type-C Cable. The lowest price was: $9.99.
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)).