Looks like the list of U.S. operators selling the Samsung Galaxy S III has grown once again. Ting, a Sprint MVNO, has reached out to tell us that it's now accepting pre-orders for the Galaxy S III, which it'll offer in Marble White and Pebble Blue in both 16GB and 32GB sizes. The devices are expected to ship in three to six weeks. As for pricing, the 16GB models cost $529, while the more capacious 32GB versions are $579. If you need more incentive to pre-order, Ting says that it's going to select two GSIII pre-orders of the first two hundred and refund the price to those two buyers.