   business, dollars, cash, money, trading, stocks     For the
sake of comparison, I'm going to break down the cost of
ownership over a two-year span for Verizon, the carrier with the
most U.S. subscribers, and T-Mobile, which is now the country's
largest prepaid network since swallowing up Metro PCS and now
killing off its own two-year contract model.  Samsung's Galaxy
S3 makes a good model device, thanks to its ubiquity across
seven carriers; the 16GB version has a $199.99 base price for
most contract providers, though prices will start to drop once
the Samsung Galaxy S4 hits shelves.  Reasons to go prepaid  The
first difference between the two carriers is the cost of the
phone. The Galaxy S3 isn't really $200; that's the price that
Verizon and the rest subsidize so you pay less up-front than a
T-Mobile customer, who will pay almost $600. The trade-off for a
"cheaper" Verizon phone is committing to two years of data fees
no matter what, and getting slapped with a multiple-hundred-
dollar termination fee if y