I have a BC, they are wonderful dogs, but absolutely not for everyone! The thing about mixed breeds is that they can inherit the appearance & personality of either parent. You could end up with a large, Golden-type dog; orrr, a large, Golden-sized dog with very high Border Collie drive and very high energy. Border Collies often must be supervised with children, because they have a tendency to nip at their heels when playing. They require a job in their life and cannot be expected to just hang around the house or yard and entertain themselves. You need to prepare yourself to have a dog with full-on BC personality, because that could very well happen!

I also do not advise you to buy a puppy from a "backyard breeder", as it sounds like this is the case with these pups. I'm sure they are adorable, but if these people are not responsible enough to keep track of their dogs and get them spayed/neutered - or if they are breeding mixes on purpose - you should not support them doing so. You would be MUCH safer adopting an older puppy (6-12 months) from the shelter, because you will be able to know what the dog's personality is like & what size they will be if that concerns you.