Figure its probably been answered enough Gares... but FWIW - I used to run a money-transfer service on Blackhand during 1.0 days, never had any issues. Started out going through the Neutral AH, eventually had enough gold on both sides that I could just do trades.

Pricing: I'd do 1:1 trades for people I knew, 5% charge on larger sums for people that I didn't know.