You can create price alert here, copy coupons and view price history. Let’s see what best price is ATM.
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Output frequency is: 50Hz for 220V model /60Hz for 110V model, Weight: 0.6 kg, Peak Power: 4000W, Input voltage: DC 10.5V~15V, Output voltage: AC 110V /220V for your choice, Package Size: 6.4×4.4x 2.2 inch, Type: DC 12V to AC110V / DC 12V to AC 220V, (When the battery voltage is lower than 10.5V / the inverter is low voltage protection / when the battery voltage is higher than 15V / the inverter high voltage protection), Output Waveform: Modified sine wave, Rated Power: 300W, Model: SP4000, Product Size: 13.5*11.2*5.5cm, Name: Car Power Inverter 4000W
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($35.69): BGCarEle4
2. ($39.47): BG00c906
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGHXM009, BG2020CAR, BGH0090901, BGCuponation10, BG10OFFAFF, BGwhielabel, 13f142, 00c906, ADMITAD2212, 2022ACTIESNL, BGCarEle1, MVC8SPRING, 8BGwbg2204, BGCarEle3, 9OFFSUMMER
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for 300W Car Power Inverter 12V-110/220V.
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)).