I am very sorry to hear about your dog
Are you after a fully trained working dog, or a young dog? We currently have a young dog (approx 18 months) who is running at hand, is easily handled and should make a good every day work dog. He has a wonderful nature with children (I have a 5 year old son) and other dogs (we have a number of working sheepdogs as well as GSDs).
Here is a short video
JockIf you want any more information just PM me.
I am in the Lammermuir Hills, Scottish Borders/East Lothian border