$69.99 – Power Supply: 1x 3000mAh Rechargeable Li Battery(Built-in)(Comes with a spare battery), Pricision: ±1mm 10M, Laser Wavelength: : 655nm, Working Distance: Up to 10M indoor; up to 30M outdoor, Storage Temperature: -4 to 140 (Fahrenheit), Leveling Range: ±3°, Working Temperature: 14 to 122 (Fahrenheit), Working time: 4 Hrs, Laser Class: Class IIIB, 3D Laser Leveling: 8 Vertical Line / 4 Horizontal Line, Laser Level Line Width: 1.5mm / 5mm, Rotation Degree: 360°, Line Output Power: <5mw, Damping Type: Magnetic, Material: Aluminum Alloy Chassis + Engineering Plastics, Laser Color: Green, Accuracy: 90° ± 30, Leveling duration: ≤4s.
Latest update shows that MUSTOOL 3D Green Auto Laser Level 12 Lines with 2 Batteries costs $69.99 (in Banggood). Just check coupons out (with price alert and history). What is best price?
Latest coupon and price update (UTC):
Banggood ($69.99)
Banggood warehouse is located in China. So I have checked for active coupons (all category coupons and old ones), but there was no working coupon in Banggood. But wait a sec… Is it a good price? The average price for this item is $77.49, so I think it’s a good price!
Link: Banggood product page
Price: $69.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/i1u
Old coupons (from the oldest to the newest): BGb27e4e, BG130dfc, BG7db180, BGMUSTOOL05, BGMUSTOOL18, BG3747d1, BGHID18, BG67c29a, BGPO7JULY10, BGTools8, BGGines, BGM1TOOLS88, BGMARCHSALE, BG20236Tool, BGTOOS729, BG8FORMULAMX, BGBFDAY8, BGNEWYEAR8, BGSPRING8OFF, BGHONEYSP, BGESJY8, BGALL8
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – MUSTOOL 3D Green Auto Laser Level 12 Lines with 2 Batteries [EU] ($-3)
Aliexpress
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Price history and price alert
Here is price history (for all/most countries) for MUSTOOL 3D Green Auto Laser Level 12 Lines with 2 Batteries. The lowest price was: $66.99.
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)).