Aliexpress
There’re some similar items on Aliexpress in my database. There may be some other items though.
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Cordless Soldering Iron Tool Pen USB 5V 8W | 6.52 USD | – |
 |
MINIWARE TS101 65W Mini USB Soldering Iron | 67.69 USD | – |
More on Aliexpress… Here are coupons that you can use.
Latest coupon and price update (UTC):
Banggood
Banggood warehouse is located in China.
Link: Banggood product page
Coupon (11.42 USD): BGGines
Coupon (11.93 USD): BG00c906
(CouponsFromChina.com tip: paste coupon code in your cart and click Apply after clicking “Proceed to checkout”. Click to copy code and open shop)
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k
Old coupons (from the oldest to the newest): 502C6B, 11DANIU, DANIU, BG15sh, AFfbG10, BGVDay10%off, BGAFF10OFF, bGhOnEy10, BGDANIU, BGherra, BGTool15, BGRUS15, BGWELDTOOL, BG8a7644, CityadsTool, BGPTL088
(probably won’t work, but you can try them out)
Price history and price alert
Do you need price history chart (for all/most countries) for USB Soldering Iron 5V 8W? There we go.
Price records source(s): Gearbest, Banggood
Click on image to enlarge. 
You can set price alert (for Banggood).