As expected, Apple"s online store as of Friday no longer lists the 17-inch 1.9GHz iMac G5 for sale. Last week it was reported that Apple had officially discontinued the model in the United States and retained only limited inventory, which has since been exhausted via direct sales from the Apple online store. This week, the company also slashed the price of the 20-inch 2.1GHz iMac G5 by $200. Supplies of this model are also dwindling.