We have yet to meet a person who didn't find the way text bundles are priced as anything other than completely mercenary. Seriously? Our only options are the just enough (if you use sparingly) 200 or the waaaay too much (unless you refuse speaking on the phone and only text) 1500? No middle ground, AT&T? None?
This is precisely where third party app developers have stepped into the gap. And, boy, have they. There are nearly as many texting apps as there are fart soundboards. What's a discerning customer to do? You could spend a couple days downloading and trying out what the app store has to offer, or you could sit back and let us do the work.