Thanks so much for the answers.I will look into boaphiles to get a price idea.
I did mean Arabesque and albino separately, I'm not sure which I love more. I like the dark and speckley boas, but that shade of yellow is my favorite color. Maybe I'll just have to get one of each!
I would probably get a baby, since I expect it will be cheaper and I'd like to "get to know" the snake as it grows.