Here is a good article warning about some cheaply made and dangerous swords currently coming out of China.
From https://kwansao.wordpress.com/2012/02/18/dangerous-wing-chun-swords-from-longquan/ :
“A Longquan sword maker is selling Bat Jom Do on eBay as “lqyanggu”. I suspect this the retail website: http://www.yourswords.com/chinese-sword/chinese-traditional-weapons/wing-chun-knife-340.html
These swords are dangerous to the user! They look pretty but are very poorly constructed! Do not buy these if you value your fingers and eyeballs. The blade is not securely attached to the handle, and the handle is actually hollow. This is hidden with the cord that wraps the handle, so you won’t even notice this critical flaw until they snap in half and you impale yourself.