Wheelbase: 154mm, Weight: 118g without Battery, VTX: MAMBA TX400 400MW, Item Name: GTB 4 Inch, ESC: MAMBA F30MINI 30A 8 BIT 3-5S, Camera: CADDX BABY RATEL, FC: MAMBA F405 MINI MK3, Props：GemFan 4023 3-blades, Antenna: -dipole antenna, Motor: MAMBA 1404 3650KV.
Check coupons or create price alert down below. 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 price update (UTC time):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
1. ($95.40): BGc94eab
2. ($114.48): BG28RC
just apply this code 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): BGRC902, BgoFErTaSchInA10, bGhOnEy10, BGChollodronesGTB, BG11Racer, 7bcdf9, BG10RACING, BGAFF10OFF, BG9MCH, BGDAVIS, BGMATT7, 28RC
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Check out price history chart (for all/most countries) for DIATONE GTB 154mm 4Inch 3S Drone PNP. The lowest price was: $95.4.
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)).