Samsung Gravity T

I am considering this phone but am wondering why they would offer a phone in this market with a reduced ($10) internet connect. They certainly don't advertise it and I have been w/ T-mobile for many years.

I have been looking at one of the HTC 2 phones (love the screen) but am wary of adding yet another 30+ monthly internet charge.

I also am conused about what "no wi-fi" means. (obviously i don't know my way around all this new technology) If you are paying for internet on your phone why would you then need wi-fi.

Thanks in advance for any info and advice.
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