You can create price alert here, copy coupons and view price history. Do you want to know what the best price is?
Weight: 165g (without battery), Top plate thickness: 2mm, Propeller size: 2.3~2.5 inch, SucceX-A F4/40A BLHeliS true AIO Board, FC pattern: 20*20mm，30.5*30.5mm, Top and bottom plate spacing: 25mm (aluminum column height 25mm), Wheelbase: 122mm, Motor: XING NANO 1404 4600KV, Bottom plate thickness: 3mm, FPV cam spacing: 19mm
Aliexpress
There’re some similar (or not) items on Aliexpress
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. ($836.10): bGhOnEy10
2. ($836.10): BGdragonBoat
3. ($836.10): BgcLuBofErtA10
apply it 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): BGDC2SET, BGSS10%SW, BGDC2P, bgshOOp10, BGRC902, BgoFErTaSchInA10
(these coupons are old, so probably won’t work)
Price history and price alert
Price history (for all/most countries) for iFlight TITAN DC2 HD 122mm 4S BNF With DJI Digital Air Unit and Goggles is here.
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)).