I downloaded demo account. Yes, they do charge commission. They do have a variable spread.(usually pretty low) GBPJPY usually around 4 pips, I have seen it at 1 or 2 pips. EURUSD is usually 2-3 pips, sometimes 0-1 pips. Keep in mind you do have to overcome commission. GBPJPY commission charged was 12.50 for 1 full standard lot(100,000). Check it out.