Aliexpress
Click here… to search for SHOWSEE F1-B Blue Electric Shaver on Aliexpress
Here are coupons that you can use.
Latest price update (UTC time):
Banggood
Banggood warehouse is located in China. I am tired of searching coupons, but I found one for you…
Link: Banggood product page
Coupon (28.19 USD): BG00c906
(CouponsFromChina.com tip: apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Old coupons (from the oldest to the newest): BGNOXP291, BGHealth06, 00c906
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for SHOWSEE F1-B Blue Electric Shaver.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).