I would recommend searching the internet and even this website...but beware you will get many different opinions on here about chocolates....tends to get heated...There are a few owners of chocolates on here also, so maybe talking to someone who actually has one would be a good idea....Happy shopping and IMO chocolates are a beautiful asset to the yorkshire terrier breed.
Oh and i agree with above post...they should not charge more for them. They are still a yorkie, not something that should be over charged for nor treated as a "rare" find. They are simply little lovers just like any other Yorkie