Package Contents: 1x Flight Controller, 1x Set of Cables, 1x Pack of Pin Headers.
Basically copy coupon, view price history or create e-mail price alert. Let’s see what best price is ATM.
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 China.
Link: Banggood product page
1. ($14.28): BG11Racer
2. ($14.44): BGAFF10OFF
3. ($14.44): bGhOnEy10
4. ($14.44): BgcLuBofErtA10
you should apply the coupon in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): e2bcea, 502C6B, TTxBG10, d8f2bb, bgssaff9, AFfbG10, BGCITYADS2019, BGGEPPart, BGVDay10%off, 0e7f33, FBCOUPON1, BGdragonBoat, bgshOOp10, BGRC902, BgoFErTaSchInA10, BGCuponation10, BGDAVIS, BGHONEY2110, ADMITAD2212
(these codes were not working in latest coupon update, but you can check them out anyway)
Other warehouses/versions
This item is available in 3 another warehouse/versions!
1. China – Mini F3 Deluxe 10DOF Flight Controller RC ($-3)
2. Europe – Mini F3 ACRO 6DOF Brushless Flight Controller [EU] ($-3)
3. Europe – Mini F3 Deluxe 10DOF Flight Controller RC [EU] ($-3)
Price history and price alert
Check out price history chart (for all/most countries) for Mini F3 ACRO 6DOF Brushless Flight Controller. The lowest price was: $6.99.
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)).