But they may not all function the same. I have mentioned here and detailed in the other threads I linked to that the very cheap don't function that well due to loose fit on arbor, poor position of inserts & poor inserts. The ARC ones are a marked step up and the named brand are likely to be a step further put probably less noticable and certainly the step is not proportional to the step in price.
Industry needs to be able to swap a set of tips and know that the tool can go back into the ATC and not need resetting to cut to the same micron accuracy. so fit and spec of inserts will be high. They cut at far greater rates than us so fit onto arbor will be better and they will also use far more exotic materials for added vibration damping and rigidity, even the screws that hold the inserts will be better spec, etc.