.2 grams, yeah
The biggest dose I've ever taken at once was ~250mg and I was rolling my ass off. I guess you've taken it already, but that's a pretty huge dose.
Also; have any of you guys seen Silk Road's prices?

41.29 BTC is ~$555.35. 20 grams is 20000mg. A normal molly pill has ~100mg in it. At a rave, they can sell for up to $15, but let's call it 10. 200 pills * $10 a pill = $2,000. By buying on Silk Road you're literally paying 1/4 the price. Granted, that's bulk price, but the individual prices aren't bad either.

These are 210mg each (about double a normal dose) and sell for $8.87. These would go for ~15-20 at a rave. That's still like half off.