Power Supply Charge Adapter, Operating System Windows 11, GPU AMD Radeon Graphics, Ethernet Network Support RJ45 1000M*1, Core Octa-Core Sixteen Threads 4MB Cache /1.8GHz / Up to 4.4GHz, CPU AMD Ryzen 7 4800U, SSD Support 2.5 inch HDD(7mm), RAM 32GB DDR4 / 3200MHz / support up to 64GB, Type SER4, Brand Beelink, Hard Drives Capacity 500GB M.2 NVMe SSD / support up to 2TB, Wireless WIFI 6E (802.11ax), Bluetooth BT 5.0.
Just check coupons out (with price alert and history). What is the best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
You can use link bot to get even lower price:
Click here to search by yourself. Here are coupons that you can use.
Latest coupon code price check (UTC time):
Banggood
Banggood warehouse is located in Hong Kong. Too bad there’s no coupon right now in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): 2022ACTIESNL, BGb3125d, BGAlerabat1, BG9ddd39, BGf4f231, Terence, BGd52a97, Tabby20, BGb1def9, BGba9e7e, 2203ActiesNL, BGd30069, CouponsdePC, tRaDetRaCKeR, BG01a58b, 8wEbgaInS5, BG6a8a68, pROMo8cuPoN, BGe74cd7, BGJUNEGSG9, BGJPMNBK20, Cuponation9, BGa9301c, BgGoodie9
(there’s a little possibility that old coupon will work)
Price history and price alert
Check out price history chart (for all/most countries) for Beelink SER4 4800U 32/500GB Mini PC. The lowest price was: $559.99.
Price records source(s): Banggood
Click on image to enlarge. 
You can set price alert (for Banggood and Aliexpress (only if product name will be the same as on Banggood and I will post it on social media though, so it’s more like Banggood price alert)).