Latest update shows that 70W Hot Stapler Plastic Welding Machine costs $31.59 (in Banggood). Price history, coupons and price alert are available on this page. Best price?
Size: 23x 16x 3cm/9x 6.3x 1.2in, Output voltage: 0-5V, Input voltage: 110-220V, Plastic Box: 28x 22x 7cm/11x 8.7x 2.8in, Model: XC-70, Output current: 0-60A, Output power: 70W, Frequency: 50Hz
Latest coupon code price check (UTC time):
Banggood ($31.59)
Banggood warehouse is located in China. There is no active coupon in my database right now (for Banggood). But wait a sec… Is it a good price? Hmmm, price is higher than average (which is $26.65 right now), so better set price alert down below…
Link: Banggood product page
Price: $31.59
Exclusive Allowance Coupons: https://bit.ly/3xWgD9k and https://couponsfromchina.com/short/5cd
Old coupons (from the oldest to the newest): BGc728d3, BGGines, BGd2f208, BGET12, BG20236Tool, BGET10, BG8FORMULAMX
(you can check these old coupons out, but these probably won’t work)
Aliexpress
There’re some similar (or not) items on Aliexpress
Click here to search by yourself. Here are coupons that you can use.
Price history and price alert
Price history (for all/most countries) for 70W Hot Stapler Plastic Welding Machine is here.
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)).