Roller Derby Skates or just Derby Skates are typically a lower boot or a 3/4" boot like the Antik Ar2 Boot.  We have lower priced skates such as the Riedell Dart Skate or the Riedell R3 Derby Skate.  Another cost conscious skate is the Sure Grip Gt50 skate or if you want a low cost leather skate, we suggest the Sure Grip Rebel skate.