did the same thing with the Samsung Galaxy S III, charging $299.99 on contract for the 16GB model, and then returning that $100 in the form of a gift card. It would appear that those who reserve the phablet online will not be asked to lay out that extra $100.
The carrier says it will charge your credit card 72 hours after your order, giving you three days to act on your buyer's remorse. Both the Samsung Galaxy S III and the Samsung GALAXY Note II have been offered to the same carriers for each model's stateside launch. Those operators are Verizon, AT&T, Sprint, T-Mobile and U.S. Cellular, and we wouldn't be surprised to see this pattern continue for future high-end Samsung releases.
source: U.S.Cellular via AndroidCentral