Basically copy coupon, view price history or create e-mail price alert. Best price?
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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 Europe 
. There’s only 1 record in my database, so I have no idea if the price is OK.
Link: Banggood product page
1. ($13.49): BGHONEY2110
2. ($13.99): 13f142
apply it in your cart after clicking “Proceed to checkout”. Click to copy code and open shop.
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BG17a931, TTxBG10, BGeb9f26, aff7off, bgssaff9, BG5cf727, AFfbG10, BGQWER265, BGLK5FC, 502C6B, BGNU9G7KL, BGlK24532O, BGBFAFF2019, BGNgyro8a, BGCITYADS2019, BGGIUFFYIH, BGN1245LM, BGN145th6, BGVDay10%off, BGN245E, 7d18f7, FBCOUPON1, BGAFF10OFF, BGTT10, bGhOnEy10, BGdragonBoat, BGSS10%SW, bgshOOp10, BgoFErTaSchInA10, BgcLuBofErtA10, BGNDS10OFF, BGCuponation10, BANGGOODSD, 6GSGIT, BG00c906
(sometimes old coupons work, so you can check them out (this site checks them on every price update))
Other warehouses/versions
This item is available in 3 another warehouse/versions!
1. China – Netac P500 PRO U3 64GB MicroSD Card ($-3)
2. China – Netac P500 PRO U3 128GB MicroSD Card ($-3)
3. China – Netac P500 PRO U3 256GB MicroSD Card ($-3)
Price history and price alert
Well, you won’t see price history chart, coz we have only 1 database record for this item (and price was $8.99).
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)).