The percentage of commission you pay is not dependent on how long it takes your home to sell - you pay the same if the home sells in 8 hours, 8 days, 8 weeks or 8 months. You’re paying your REALTOR to sell your home and if they do a great job and sell it quickly at the price you want, it wouldn’t really make sense to penalize them for doing a great job. That would be like paying your dentist less because your root canal went more smoothly than expected. Likewise, it wouldn’t make sense for your agent to ask you to pay more if it takes them a long time to sell your home. If you’re more inconvenienced by a long sale or they aren’t doing everything they can to sell it, you shouldn’t have to pay more commission. That would be like paying your dentist more if you have complications during surgery, get an infection and it takes you longer to heal.  Commission is true pay for performance.