REX imposes a 2.5 percent listing fee, which is capped at $9,000 per transaction. REX's price isn't much of a reduction compared to what other realtors charge, which is 2.5-3 percent. Some of REX's best competitors charge as little as 1 per cent in listing fees, while flat fee MLS companies charge as little as a few dollars in listing fees. Check out the top low commission real estate agents.