So is the way i described completely undoable then? It seems like the best and cheapest way.
Bitinstant is confusing and i dont want to be showing ID and what not, and i would rather not deal with another person in person...
It's doable, but seems unlikely that someone would send you B, before you send them moneypack (or don't), considering you don't have any reputation yet. Sending B is irreversible. So, it seems difficult to find someone who will trust you.
And if you send the moneypack first, they may not send you anything...
You can go to
OverTheCounter and see what's available, and start building a reputation as an honest trader, but it's a steep learning curve to deal there, and same trust problems apply, until you have a reputation.