Good news first! Hello and welcome to the forums, so glad you joined us! We would love to share your journey and help you prepare for a feathered friend.
Bad news! Don't do it, selling parrot eggs to unsuspecting birdlovers is an old and amazingly still popular scam. The eggs are seldom viable, conditions would have to be perfect to produce a hatchling. Feeding a newly hatched chick of any species requires a great deal of skill, knowledge and even then the odds aren't in your favor. The experience is likely to cost you far more in dollars and heartbreak than you could ever hope to gain.
I would do more research, check with local breeders, maybe visit a few rescues where they will allow you to visit various species, you may even want to volunteer. There is a wealth of opportunities to adopt or buy from a reputable breeder, you'll be much happier with the outcome.