$5.50 – 1 Set Reflective Stickers Invisible Helmet Stickers Helmet Reflective Tape Waterproof Suitable For Bicycle Motorcycle Helmets – Black.
Latest update shows that Reflective Stickers for Helmet Waterproof costs $5.5 (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Let’s see what best price is ATM.
Latest coupon code price check (UTC time):
Banggood ($5.50)
Banggood warehouse is located in China. I think you want to know if the price is good. Looks like this is great price. I didn’t track lower than that in CouponsFromChina database ever. I found coupon for you. Check this out.
Link: Banggood product page
Price without coupon: $6.99
1. ($5.50): BG76cb1f
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
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.
Price history and price alert
Price history (for all/most countries) for Reflective Stickers for Helmet Waterproof is here. The lowest price was: $5.5.
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)).