The link didn't work for me...
But, I agree with Rae Rae - 1500 is way too much for a mixed breed. And I find her claim that a "mix breed is better than any other when it comes to health" a little funny... there are no guarantees with dogs - whether they are mixed or purebred. A 5 year health gaurantee is phenomenal - I have NEVER heard of a breeder offering such a long gaurantee (usually it's one or two years). What exactly is her gaurantee? What does it cover?
If you want a purebred yorkie, get a purebred yorkie - I'm sure there's a couple people on here that can recommend the breed to you fulheartedly
For your price range, you could most certainly get a purebred male yorkie.
Just make sure you feel good about your decision - don't rush into it, continue to do research and don't hesitate to contact several breeders. Contacting and asking questions doesn't commit you to purchasing. When I was searching for my first yorkie, I contacted 15 different breeders (7 replied) and narrowed my search down to 2 fabulous breeders (later got a puppy from each breeder). I did a lot of research on the breed and asked the breeders TONS of questions.
Good luck in finding your future baby!