GEPRC
If you shop on GEPRC page, you can use my promo code haomaru during check out to get a 5% discount off your purchase.
Banggood
Here is a list of promotional coupons for purchases on Banggood. Feel free to use them. Note that I will receive a small commission at no cost to you if you purchase through the link. This will help me maintain this site and create more useful contents. Enjoy!
I’ll update this list from time to time. Each coupon has a limited quantity so it is on first come first serve basis. Note that coupon might apply to products from certain warehouses only. The is an indicator at the last column that tells you whether the coupon is still valid, to the best of my knowledge.