How can i become discovered?

ok im 10 and i wanna know how i can get discovered, i sing good and i act good, and how much would a agent cost? i live near new york, and connecticut and florida, i spell good too and im kind of a brainiac, i was home schooled for about a year and then for 3 1/2 years i went to elementary school, (im a gemini and gemini's are the smartest of all zodiac signs) soo yahh how much would an agent cost and is their any disney channel auditions?