The term dinker is so overused. You don't think these bags get a quick once over before they go to you? When there's money involved, there's hands in the cookie jar. If you're looking to get some new blood and buy 10 females to breed then it's a great idea but otherwise, I'd steer clear. I've heard lots of stories about people struggling to get these stressed out international babies to eat so just be sure you know what you're getting into.
Regards,
B