The coupon price for Single Hand F Clamp 50mm for Woodworking is $5.59 (in Banggood). Just check coupons out (with price alert and history). What is the best price?
Single Hand F Clamp High Hardness Engineering Plastic G Style Design 50mm Maximum Opening Ideal for Woodworking and Model Aviation
Latest price update (UTC time):
Banggood ($5.59)
Banggood warehouse is located in China. Hmmm… There is no active coupon in Banggood at this moment. Low/high price? It’s a good price, isn’t it? The average is $7.39.
Link: Banggood product page
Price: $5.59
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
Check out price history chart (for all/most countries) for Single Hand F Clamp 50mm for Woodworking.
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)).