If you keep your eye on this site :
Pet Planet (bottom of page for Yorkie28) or go on their newsletter list, they often have RC special offers.
I don't have a Yorkie yet but when I do he will be treated like my other dogs -a mix of Royal Canin Dental and size specific RC Sensitives. Plus Plaque-Off and daily brushing. I have just found out that Petzlife Spray and Gel is now available here and will be trying that before too long. I have a teeth fetish