Check if there is $29.99 coupon for Car Head-Up Display OBD2+GPS Smart Car HUD Gauge (in Banggood). Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Car Head-Up Display OBD2+GPS Smart Car HUD Gauge Digital Odometer Security Alarm Water Temperature Alarm
Banggood ($29.99)
Banggood warehouse is located in China. Is it a reasonable price for this item? The average price for this item is $30.49, so I think it’s a good price! There we go – there’re 2 active coupon codes!
Link: Banggood product page
Price without coupon: $35.99
1. ($29.99): BGd158d8
2. ($32.39): BGAMMT03
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): BG22e216
(these codes were not working in latest coupon update, but you can check them out anyway)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for Car Head-Up Display OBD2+GPS Smart Car HUD Gauge is here.
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)).