I'll skip the traditional "You're too young" and the "you could gain so much more naturally" bit and go straight to the answer: You are paying $150 for a bottle of test that should cost you closer to $50. ($30 on the internet, maybe $60 on the street, give or take a few bucks on the markup). Put it this way, I paid $125 for a 50 ml bottle of the same test.
Seriously, you sound like you could gain quite a bit of strength & size (at least 20-25 more pounds) before you switch to the juice. Save the d-bol for later in life, you'll be glad you did.