This deal slaps harder than inflation: $22.99 (grab it now at Banggood). CPU: RK3328, GPU: Mali-450, RAM: 2G RAM, ROM: 16G ROM, Processor: RK3328.
Updated:
Banggood
Warehouse in China.
Link: X88 Mini 2/16GB TV Box
Regular price: $24.99
$22.99 with coupon: BG08576d
Additional Banggood coupons:
1. First page
2. Second page
Aliexpress
I could not find it on Aliexpress. Click here to search by yourself.
Here are coupons that you can use.
Price history and price alert
Do you need price history chart (for all/most countries) for X88 Mini 2/16GB TV Box? There we go. The lowest price was: $22.99.
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)).