Just check coupons out (with price alert and history). You probably want to know what is the best price?
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 and price update (UTC):
Power: 8 to 18 V provided via vehicle, Supported Protocols: J1859-41.6, ISO9141, and CAN (Control Area Network ISO 11898), Operating Temperature: 0 to 60 ? (32 to 140 ?), Dimensions: 124mm (4.88in)x 70mm (2.76”)x 20mm (0.79”), Storage Temperature: -20 to 70 ? (-4 to 158 ?), Weight: 0.45KG, Display: TFT color screen (320*240dpi), J1850-10.4, KWP2000 (ISO 14230)
Banggood
Banggood warehouse is located in Europe 
. Sorry, but there’s no price history in my database.
Link: Banggood product page
1. ($35.99): BG10OFFAFF
2. ($35.99): BGHONEY2110
3. ($38.99): 13f142
you should apply the coupon 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): 502C6B, e2bcea, Cardvr30, TTxBG10, BgAuMotor, AM15prime, AMPrime01, Automo, BG1111CAR, BGKW680, BGCHRISTMAS, BGAutos, bGhOnEy10, BG2dfcd7, BGCARELEC, BGAFF10OFF, BGCKCZ44, BGCuponation10
(these codes were not working in latest coupon update, but you can check them out anyway)
Price history and price alert
Not enough data to show price history chart… $33.29 is the only recorded price. It was not cheaper than that since we have saved it in DB.
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)).