Basically copy coupon, view price history or create e-mail price alert. What is best price?
Aliexpress
There’re some similar (or not) items on Aliexpress
| Image | Product (link) | Price | Coupons |
|---|---|---|---|
 |
Ct312 3 In 1 Tig Mma Cut Tig Welder Inverter | $390.79 | – |
Click here to search by yourself. Here are coupons that you can use.
Latest price update (UTC time):
Technology: Latest invert technology, Dimensions: 340x 160x 240mm, Model Number: CT312, Weight: 28.66lb, Rated output voltage: 220V ±15%, Rated Duty Cycle: 60 %, Pulse Frequency: 50/60Hz
Banggood
Banggood warehouse is located in China. There are no coupons for this product in Banggood.
Link: Banggood product page
Price: $-3
It looks like this item is out of stock in Banggood. If you found it then please send me the link. I will replace it.
Click here to search on Banggood!
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
There were country-specific coupon codes published on Couponsfromchina social channels and price alerts. Coupon price may vary by country, because there’re different VAT rates, shipping cost etc. There is a chance that some latest coupons are still working:
Old coupons (from the oldest to the newest): BGCT312, AFfbG10, BGVDay10%off, BGPL0313, BG12mx, Comeon, BGFHJ0, BGFHJ3, BGFHJ1, BGAFF10OFF, BGzd11, BGFHJ2, BGTT10, 26eebc, c75c94, bGhOnEy10, BGherra, BGdragonBoat, BGSS10%SW, BGCT312a, bgshOOp10, BG00324, BGa1536671, BGTool15, BgoFErTaSchInA10, BGELIG0920, BgcLuBofErtA10, BGCT312AA, BG00324A, BGWELDTOOL, BGCuponation10, BG0324DA, BG00324DA, 7bcdf9, BG8a6cdc, BGe1f261, BGHONEY2110, BGWeldingES3, BGWeldingES2, BGCN00324, BGAE00324, BG56caf0, BG06c091, BG7f16c1, CholloCT312, BG4bd850, BGa11e99, BG76aa67, BG99bd55, CityadsTool, BGJDDJ10, BG4MFD4, BGGines, BGJDDJ25, BG6d2f05, BGc9d04e, BG7ea658
(I don’t think these’re gonna work, but you can try ’em out anyway)
Price history and price alert
Here is price history (for all/most countries) for CT312 3 in 1 TIG MMA CUT Welder.
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)).