These guys are quite simply the cheapest broker going around and I would challenge anyone to find a consistently cheaper broker to trade with.
TD365 prides itself on being one of, if not, the lowest cost CFD broker. Not only that, they offer fixed spreads 24 hours a day, 5 days a week! Remember, with fixed spreads, you will always know how much you are going to pay to place a trade.
These guys are regulated in both Australia and The Bahamas. They can offer leverage of up to 200:1, although Australian applicants will be limited to 30:1 leverage, as per recent regulation changes.