Probably not. When buying fruit trees, including a macadamia tree, I would recommend buying a grafted, budded or air layered tree – not a seedling. There are a few exceptions: papayas, coffee and mangosteen are usually grown from seed. Most citrus seedlings (perhaps 80%) will run true. But with citrus it is still a good idea to buy a tree budded onto a rootstock which is resistant to root decaying fungi. The macadamia seedlings will grow into a nice looking tree, but most of the time the nuts will have lower oil content, and production will be poor.