There are plenty of breeders using the website
OzGreyhoundSales so if your a breeder and you want to advertise your services or your pups you should checkout
Greyhound Breeders. The ads are all currently free to upload and anyone can search for breeding services for free too.
The site is getting heaps of traffic from google and facebook already so should be a fair few ads uploaded very soon.
Feel free to PM me if you need help with anything, more then happy to assist, cheers