Malahit-DSP2 2.40 2nd Generation SDR Malachite Receiver Radio is for $349.99 (in Banggood). Go down and check coupons out. Remember to check price history if it is available. What is the best price?
Latest coupon and price update (UTC):
New Firmware 2.40 Genuine Second Generation Malahit-DSP2 SDR Malachite Receiver Radio 10kHz-380MHz 404MHz-2GHz
Banggood ($349.99)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. But wait a sec… Is it a good price? From what I can see this price is higher than average price ($322.39).
Link: Banggood product page
Price: $349.99
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG09aa0f, BG93757b, BGSPRING8OFF, BGHONEYSP, BG5d7e36, BGESJY8, BGc0c501, BGALL8
(you can check these old coupons out, but these probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Check out price history chart (for all/most countries) for Malahit-DSP2 2.40 2nd Generation SDR Malachite Receiver Radio.
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)).