I have exactly 150m available right now - asking $1.20/m and accepting PayPal only. I have a few vouches, but we can do several trades in small increments if you don't trust me.
Also, I'll have 3-4 billion within the next few days, so I'll be willing to sell whatever you need in the future at the best price you can find.
Let me know if you'd like to buy - I don't expect my current stock to last long.