Adieu to G5 PCI-X ?

When the PCI Express Powermac G5s were released, the Apple Store went on selling Dual 2.7 GHz for those who required PCI-X. The week-end apparently was fatal to them, as the link that allowed buying them vanished. When switching from PCI to PCI-X, Apple waited much longer to withdraw older machines from the store.
[Upd] Those machines are still sold on the US Store.