WANTED: Golden or Yellow Labrador Retriever in Los Molinos, California For Sale

I see a lot of labs on here. I'd love to own one. Maybe someone has one that's under 1, who could possibly become my Service Dog? I don't want a mix. I want a purebred again.
I have had my Yellow Lab 10 years, and I just retired him from working for me. I am disabled, walking, but with limitations on my mobility. Your dog would accompany me to and from stores, and everywhere I go and he would be trained to retrieve objects I drop or cannot get to, and to bring them to me.
His assistance would make my life much better. He would also help me up stairs and to pull my shopping cart. I have a back injury. I'm not in a chair anymore, but I am not as mobile as I'd like either. It is a permanent disability.
I have had mine, as I said, 10 yrs. My ex husband just took him with him, so I could get another to serve. I'd like to give your dog a wonderful home. I am a good trainer, but I need a dog who has a good attention span. I don't have a ton of money, but the state pays for my dog's food, and shots. I get a supplement, on a monthly basis, to help for those things.
I am very interested in finding a lab to love. I ask for a purebred, simply because it's all I've had and all my gear will fit it. Spayed or neutered would be a plus, but if not, I will do that.