If you don't want to spend the $400 - 600 on a bee right now, you could always make your own. You can get a male spider and a female pastel for under $300, maybe even less. Breed them to get a bumblebee, then trade the non-bee siblings for another morph you like and breed that one to your bee.
It's more a long-term plan, but it would be fun. And it could be a cool learning experience for your son, if he's old enough and has the interest.