Model: GS520, Interface: USB+3.5mm Audio Interface, Channel: 2.0, Cable Length: 1.2m, Maximum Power: 5Wx 2, Frequency Response: 150Hz-20KHz, Input Sensitivity: 650mv±50mv2, Signal to Noise Ratio: ≥60db, Brand: Redragon.
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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 coupon and price update (UTC):
Banggood
Banggood warehouse is located in China. There is one coupon right now! Check this out.
Link: Banggood product page
1. ($50.06): BG1b5830
you should apply the coupon 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): BGCNRDGU, 13f142, BGCNREHS, BGCNFEQA, BGBuscape01, BGCNHTSP, BG651551, BGBRPL2, BGHOTSHOP15, BGAlerabatKL, BGd173b4, BGAudioVideo, BGAUDIO, BG9ba0e8
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Do you need price history chart (for all/most countries) for Redragon GS520 RGB Speakers? There we go. The lowest price was: $27.99.
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)).