A cross does not automatically inherit the health of both parents or the vigour of neither. The Goldendoodle's list reflects both sides: hip and elbow dysplasia and heart disease from the retriever, and progressive retinal atrophy, Addison's disease and subvalvular aortic stenosis appearing from either.
Because it is not a standardised breed, testing standards vary wildly. Ask for hip and elbow scores on both parents, eye certification, cardiac examination, and DNA panels appropriate to each parent breed. A breeder producing crosses without testing either side is common and should be walked away from.
On money the two are level: $120–$220 a month against $110–$240, and $1,800–$3,200 against $1,700–$3,200.
The figure that is missing from both is grooming. A professional groom every six to eight weeks for a medium to large curly-coated dog is a substantial recurring cost across ten to fifteen years, and it is not optional. Budget it explicitly.
The Goldendoodle's lifespan is 10 to 15 years against the Akita's 10 to 13, with smaller dogs at the upper end.