I would rather get a pup from a reputable breeder who has had success with similar hunting styles to my own on similar game. If it comes from a long line of proven stock, I truely believe it will turn on dependent upon the training program.
I'd rather give it a go myself, than to buy someone else's cull. If they part with it, it did not fill their definition of a hog dog 100%. Otherwise they would still be feeding it. There are exceptions, but this is the norm. JMO