Originally Posted by
walterbyrd
Full disclosure: I'm cheap.
Have you considered used?
A used rack that is complete and intact without any broken welds will function and hold just as it was designed for.
Racks should never be fastened to both seapost and axle frame eyelets. One or the other, not both. The reason being that a seatpost is considered movable, even if it is not a quick release.
Seatpost clamped racks are the only option when a rear suspension does not allow a frame mounted rack.
Otherwise, a proper rack is to be fastened entirely onto the frame for utmost solidness.