Go down and check coupons out. Remember to check price history if it is available. Do you want to know what the best price is?
Rated power: 100W Input voltage: 12V Output voltage: 220V (50Hz) USB output: 5V / 3A, 12V / 1.5A Reactive current: 0.4A and less Power-supply efficiency: 85 percent and more Operating temperature: -10 – 50 Deg.C, 9V / 2A
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):
Banggood
Banggood warehouse is located in China. You can get coupon down below.
Link: Banggood product page
1. ($61.37): BG10OFFAFF1
apply it in your cart 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): e2bcea, 330a5a, BgAuMotor, b71c67, AM15prime, AMPrime01, Automo, Automo1, BGAutos, BGSMARTMI1, BGJulyCAR01, BGCARELEC, 7d18f7, BG2020CAR, BGAFF10OFF, BGCuponation10, 13f142, BG10OFFAFF, BGwhielabel
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for Xiaomi MiJia Car Inverter 12V to 220V.
Price records source(s): Gearbest, 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)).