You can create price alert here, copy coupons and view price history. Do you want to know what the best price is?
, 1x Power Cable, 1x BNC-BNC Cable, 2x BNC-Clip Cables, 1x 50MHz FY6900 DDS Signal Generator, 1x USB Data Cable
Aliexpress
There’re some similar (or not) items on Aliexpress
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. There is one coupon available! Pretty cool, huh?
Link: Banggood product page
1. ($102.09): BGherra
paste coupon code in your cart and click Apply 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): BG11SHOP
(you can check these old coupons out, but these probably won’t work)
Price history and price alert
Here is price history (for all/most countries) for FY6900 50MHz Dual Channel DDS Signal Generator.
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)).