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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.
Link: Banggood product page
1. ($35.99): BGAFF10OFF
2. ($35.99): BGNDS10OFF
paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop.
Additional Banggood coupons: first page and second page
Old coupons (from the oldest to the newest): TTxBG10, 2019SPEDM, BG3CSUM, bgssaff9, AFfbG10, BGLKCRF7, BGLJ8V6, 502C6B, BGLK077YR, BGbut9f69, BGBFAFF2019, BGNFYgf59, BGCITYADS2019, BGNH5GD9FK, BGVDay10%off, BGTT10, bGhOnEy10, BGN577Y, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BGNQ77R, BgcLuBofErtA10
(system checks these coupons on every price check (like once per 24 hours), but you can check them out anyway)
Other warehouses/versions
This item is available in 2 another warehouse/versions!
1. China – Netac N600S SSD 1TB ($-3)
2. China – Netac N600S SSD 720GB ($-3)
Price history and price alert
Price history (for all/most countries) for Netac N600S SSD 128GB is here. The lowest price was: $22.39.
Price records source(s): Gearbest, 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)).