Operating System: Android 8.0, CPU: MT6797 (Helio X23) Deca Core, GPU: ARM Mali-T880 780MHz, 10.1 inch 10-point Capacitive Screen with 2560x 1600 Resolution, 4GB LPDDR4 RAM for Advanced Multitasking, 64GB eMMC ROM Storage Capacity.
Go down and check coupons out. Remember to check price history if it is available. 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 and price update (UTC):
Banggood
Banggood warehouse is located in Hong Kong.
Link: Banggood product page
1. ($140.00): BGBFH9A
2. ($144.99): BG834c58
3. ($159.99): 16d1ef
4. ($167.39): aff7off
5. ($167.39): bgchinafest
put item in your cart and apply coupon code there after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): c0fb46, 518b5b, e9f6fe, FE68C1, fe68c1, 8ae2a4, 55f5ac, 3b9a14, a0ba42, AlibuyHi9a, f32369, abba84, 54fb7e, bghi9air, 14f79b, b9e893, BGcwhi9, BGChuwiH9, BG4e008a, BG8d6972, BG7CWtab, BG9a89d1, BG7CWH9A, BG9a928c, BG5afb7c, BGReHI9A, BGc44ea1, BGd1f13e, BGHI9PL, BG9CWH9, BG93a168, BG14e06d, BGd06cc2, BG1953ce, BG38acb1, BGOCH9A, BGeff424, BG74ca98, BG8922ef, BGe1dc10, BG11H9A, BGe16abb, BG215d4b, BGBF64GH9A
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Price history and price alert
Check out price history chart (for all/most countries) for Chuwi Hi9 Air CWI546 X23 4/64GB Tablet. The lowest price was: $139.99.
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)).