The coupon gods smiled: it’s only $53.99 (from Banggood). FOXSUR 26800mAh Jump Starter Power Bank 12V 800A Peak Current Car Emergency Startup Power Supply With LED Light.
Updated:
Banggood
Warehouse in China.
Link: FOXSUR 26800mAh Jump Starter Power Bank 12V 800A
Price: $53.99
Additional Banggood coupons:
1. First page
2. Second page
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.
Price history and price alert
Check out price history chart (for all/most countries) for FOXSUR 26800mAh Jump Starter Power Bank 12V 800A. The lowest price was: $49.99.
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)).