Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – DIGOO DG-NB215 15 inch Writing Tablet [EU] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in China. There is one great coupon!
Link: Banggood product page
Coupon (11.99 USD): BGe1cc12
(CouponsFromChina.com tip: apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): BGDG816, BGDG365, BGDGASG, BGGRE365, BGDD902, BGDD909, bGhOnEy10, BgoFErTaSchInA10, BGNB816, BgcLuBofErtA10, BGHUW08, BGDG1117, BGHBHJ105, BGEES65, BGCuponation10, BGCXY105, BGNB616, 13f142, BGNB511, BGMYR529, BGHONEY2110, BG8cc379, BGHUZ02, BG454588, BGc1f431, BG1c660c, BGDGDE02, BGd1e685, BGfdee44, BGc0ac4e, BG3171ef, BG9762ef, BG45919d, BGdbafe6, BG347e39, BGDBZ39, BG267e33, BG7fa398, BGBFZ18, BGa1979b, BG5d560a, BG90e77e, BGc88e64, BGb30d68, BG79b302, BGf31ecb, BGce7d56, BG82c95a, BG6c633c, BG00c906, Terence, 2203ActiesNL, BG1c2850
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – DIGOO DG-NB215 15 inch Writing Tablet [EU] (-3 USD)
Price history and price alert
Price history (for all/most countries) for DIGOO DG-NB215 15 inch Writing Tablet is here.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).