Just check coupons out (with price alert and history). You probably want to know what is the best price?
CPU: Apollo Lake N4200, GPU: Intel HD Graphics 505, Support Windows10 Pro 2.4G + 5G WiFi BT4.1 Dual Channel
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Replacement MINI PC Fan For Minix NEO N42C-4 / N42C-4 Plus DC5V 0.50A 4PIN New | $24.60 | – |
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 China. Only one coupon available!
Link: Banggood product page
1. ($313.73): elec
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): 502C6B
(these coupons are old, so probably won’t work)
Price history and price alert
Check out price history chart (for all/most countries) for MINIX NEO N42C-4 4/32GB Mini PC.
Price records source(s): Gearbest, 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)).