HFDY Registered 50K-2GHz V1.10d Malahiteam SDR Receiver Radio DSP SDR Receiver 3.5″ Touch LCD with Code support Two Antenna V3.
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.
Updated:
Banggood
Warehouse in China.
Link: HFDY 50K-2GHz V1.10d Malahiteam SDR Receiver
$193.19 with coupon: BGSPRING8OFF
Additional Banggood coupons:
1. First page
2. Second page
Price history and price alert
Price history (for all/most countries) for HFDY 50K-2GHz V1.10d Malahiteam SDR Receiver is here. The lowest price was: $193.19.
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)).