Latest update shows that Adjustable Back Support costs 11.99 USD (in Banggood). Go down and check coupons out. Remember to check price history if it is available. Best price?
Latest coupon code price check (UTC time):
Banggood (11.99 USD)
Banggood warehouse is located in China. Well, is it a good price anyway? Hmmm, price is higher than average (which is 11.89 USD right now), so better set price alert down below… We have found one coupon for this product!
Link: Banggood product page
Price without coupon: 16.99 USD
Coupon (11.99 USD): BGTYDX12
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): BG98890d, BG865f91, BG81f79e, BG94b9dc
(these coupons are old, so probably won’t work)
Aliexpress
Click here… to search for Y005 Adjustable Back Support Posture Corrector on Aliexpress
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for Y005 Adjustable Back Support Posture Corrector? There we go.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).