Power Supply 2000mAh Rechargeable Battery, Working Voltage 21V, Name Mensela CS-L1 Electric Chain Saw, Brand Mensela, Guide Plate Length 4 inch, Color Red, Materials ABS+metal.
Basically copy coupon, view price history or create e-mail price alert. What is the 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 code price check (UTC time):
Banggood
Banggood warehouse is located in China. I’m afraid that there’s no working coupon in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): BGe071c4, BGherra, BG123FBR, BGMensela01, BGHU1415, BGHU1414, BGHU1481, BGPTL088, BGGines, BGcf927d, BGa8f74f, BGGTools8, BGc1ab42, BGSaleFeb8, BGGTT13
(you can check these old coupons out, but these probably won’t work)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Mensela CS-L1 4 Inch Chain Saw with 2 Batteries [EU] ($-3)
Price history and price alert
Do you need price history chart (for all/most countries) for Mensela CS-L1 4 Inch Chain Saw with 2 Batteries? There we go. The lowest price was: $35.99.
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)).