Tucker is a yorkie poodle mix, his dad was a yorkie poodle and his mom was pure toy poodle and Tucker got most of his looks and personality of the yorkie. His body and face are very much yorkie. His ears are floppy like the poodles and his coloring is more poodlish. When he was a pup he was brown and cream, now he is just all blonde and his coat does have some wave to it, I certianly couldnt grow it out like a yorkie.. His personality is definitly all terrior..lol...he is stubborn, was difficult to learn things like potty training and basic commands, but he is very lovable at times too. He is very much my dog. I agree that when you get a mix you wont know what your pup will look like in the future, but that is what I liked about Tucker, no yorkie poos look alike, they are very unique..
..however I wouldnt pay for one as much as I would a purebred. You can always find mixes in shelters or rescues and I would definitly look there first.
If you have your heart set on a yorkie then why not just get the yorkie..