I have Roller Derby gear for Sale. I purchased the equipment from Roller Girl and have upgraded the knee pads. The knee pads alone were $99.95. The skates are size 8. All the equipment was worn twice and is in Excellent condition. As you will see in the picture, the wheels on the skates does not have a mark. I did put hockey tape across the top of the skates to protect them for when I fell. If you are interested in viewing, let me know.