Let's see. RCBS Piggyback.
Day one: Bought the thing.
Day two: Spent half the day trying to find a tool outlet to get a socket big enough to remove the nut on top of the Rockchucker. Dang thing cost a young fortune. Spent the rest of the day installing the Piggyback.
Day three: Took it off the Rockchucker. Returned to the dealer and got my money back.