I have an idea that just popped into my head but cant test it right at this moment. It requires lot of cash for little reward lol!
So if you pick up a raf partner / make a raf account, could you then boost a toon to 90 and receive 40 grantable levels? Two boosts and you would have a free level 80. If you were gonna boost a couple 90s anyway i would think this would be the route to take for a free 3rd 80. Could even gear out that 80 to help the xp off community.