1 On average, a goldendoodle puppy that is under the age of 12 weeks can cost anywhere from $700 to as much as $1,800. 2  According to PuppyFind.com, they have over 600 classifieds that range anywhere from $700 to as much as $1,800.3  The average puppy here is around 5 to 8 weeks old. Goldendoodles that cost less than $400 should be questioned. 2  There could be a good chance that the dog was not bred the way it should be. 3  There could be a good chance that older dogs end up at the shelter. 4  If you do not mind adopting an older dog, they can be adopted for less than $150.