$40.84 – HIMO Double U-Lock Electric Bicycle Lock Anti-Theft Knock Proof Mountain Bike Electromobile Bicycle Lock.
You can get HIMO Double U-Lock Bicycle Lock for $40.84 with coupon (from Banggood). Basically copy coupon, view price history or create e-mail price alert. Best price?
Latest coupon and price update (UTC):
Banggood ($40.84)
Banggood warehouse is located in China. You probably want to know if this is a good price. Well, this price is higher than average price ($36.32) You can get coupon down below.
Link: Banggood product page
Price without coupon: $42.99
1. ($40.84): BGCYCLE5
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): BGTYAP058
(I don’t think these’re gonna work, but you can try ’em out anyway)
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
Here is price history (for all/most countries) for HIMO Double U-Lock Bicycle Lock. The lowest price was: $32.99.
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)).