John here's what he sent me. Notice the dates and times between the PM's and the thread creation. Also, why is he laughing and putting smileys all over if I just scammed him $100? Doesn't make sense, he's obviously the worst liar in the world.
Btw, I've been trusted with $50+ and BTC4Amazon was about to trust me with $100 Visa gift card but I declined because I didn't have a buyer. It wouldn't make sense for me to scam $40, especially after I was just trusted with more than that a few days ago.
Here's the proof of extortion and horrible lying (notice the smileys, laughing, and also the times between thread creation and the first PM, which starts at 3:12:27) :
Anything else I need to clear up, just ask. I'll be glad to post evidence or PM it to you if it's confidential (shipping address/BB account/etc.)