I doubt 4G prices are going up
Mr. Panda thinks that its still going to be the end of Feb and that the 4G pricing will rise by at least 15 bucks.
I have no inside information, I haven't heard from a friend of a friend, and my dog hasn't slipped me any information. But, I'm fairly confident that Verizon will not raise 4G prices.
Why? Competition! And silly marketing. Since T-Mobile and AT&T are now calling their networks 4G, and since their networks are the same as their 3G networks, they are probably not planning a 4G price rise. If neither AT&T nor T-Mobile raise their 4G rates, then Verizon will lose a lot of sales if they raise their rates unilaterally.
If someone is considering the Bionic or the Atrix, if the Bionic costs $15 extra a month, why would they choose it over the Atrix? If the iPhone 5 is 4G* (that is HSPA+ on AT&T and LTE on Verizon), then Verizon would be shooting itself in the foot if it charged $15 extra per month for their 'flavor' of 4G.
*AT&T has already stated that they will not be releasing an LTE phone this year, so an AT&T iPhone 5 would not be LTE, but that doesn't mean it won't be '4G' on their HSPA+ network. It also does not preclude Verizon from releasing an LTE version of the phone. On that note, if the phone were HSPA+ and EV-DO respectively, then AT&T could advertise that their iPhone was 4G, while Verizon's was only 3G. That is why I predict that both would be 4G, HSPA+ for AT&T and LTE for Verizon. Thus, I also predict that data fees will be roughly similar.