Brake Front disc brake + rear disc brake + electronic brake, Net weight 28kg, Wheel size Front 10 inch, Input voltage 100-240V AC, Rated voltage 36V, Suspension Front suspensionx 4 + Rear suspensionx 2, Range (KM) 20Ah 55km, Grade ability 30 degree, Frame material Aluminium alloy 6061, Battery type 18650 lithium battery, Rated voltage (V) 36V, Top speed (km/h) 40km/h, People age Adult, Display Color display, Motor type DC brushless motor, Rated current 2A, Speed up Throttle, Working temperature -10℃-40℃, Waterproof IP54, Raterd output power 500W (Peak 800W), Rated power 109.2W, Storage temperature -10℃-40℃, Charging time 10 hours, Motor rated power 500W, Color Black, Battery capacity (AH) 20Ah, Size after folding 1140x 220x 470mm, Rear 8inch, Max loading 150kg, Overall size 1160x 570x 1210mm.
Basically copy coupon, view price history or create e-mail price alert. 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 China. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
1. ($1011.59): BG71c041
apply code in your basket (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): cfa1d4, PICODICOM, picodicom, 5d1752, Wholesale20, bGpAnDacHeCk, 7bcdf9, BGSS20SW, BGAFF7OFF, LFTL119C, BGEBSC15, BG01b49c, 00c906, ERidingMarch, 2203ActiesNL, tRaDetRaCKeR, 8wEbgaInS5, pROMo8cuPoN
(these coupons are old, so probably won’t work)
Price history and price alert
Do you need price history chart (for all/most countries) for LANGFEITE L11 20Ah 36V 500W Electric Scooter? There we go. The lowest price was: $599.99.
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)).