toldmywrath - Realtors charge a lot more than estate agents do in the UK. On our last sale here in Canada (in a very cheap area) commission was 7% on the first $100,000 and 3.5% on the balance, whereas in the UK we paid the estate agent 1.25% when we sold our last place.
The realtor does a lot more legal stuff than an estate agent though; writing contracts and negotiating, taking deposits and doing all the showings, not just the basic level of advertising and introduction done by a UK estate agent.