Aliexpress
Here are coupons that you can use.
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Beelink SEi10 Mini PC i3-1005G1 8/256GB [EU] (-3 USD)
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong.
Link: Banggood product page
Coupon (249.99 USD): BGJP8239
Coupon (249.99 USD): BGSEi10CL09
(CouponsFromChina.com tip: coupon code has to be applied in shop’s 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): BGBSE10, 7bcdf9, BGGTI45, BGcea651, BGe20041, BGSEi1007, BG29ff5b, BG59287b, 2022ACTIESNL, BGfd6572, BG00c906, Terence, Tabby20, BGc983b8, 2203ActiesNL
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 1 another warehouse/version!
1. Europe – Beelink SEi10 Mini PC i3-1005G1 8/256GB [EU] (-3 USD)
Price history and price alert
Check out price history chart (for all/most countries) for Beelink SEi10 Mini PC i3-1005G1 8/256GB.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).