"12-14 is standard for Dobe's"
What's standard for responsible Doberman breeders is to crop them before they ever leave the breeder's home, and it is generally done around the age of 8-9 weeks. Twelve to fourteen weeks is extremely late.
I'd like to suggest for Doberman lovers to please spend some time on this site to learn about buying responsibly
http://members.execulink.com/~korevaar/buyingguide.htmThe fact that this breeder didn't crop and is breeding oversized Dobermans are two big red flags. The last thing you want is for a Doberman to be grossly oversized, leading to more hip, elbow, joint, cardiac problems, etc.