I would also recommend getting a 510 starter kit and a little juice. e-smokeytreats.com (am not affiliated with them) has good joye 510s and really fast delivery. You could certainly get a very good idea of whether it will work for you for under $100, certainly (I think it will, and agree with the other comments in this thread). Most places have a 2-4 week return policy, if it does not work for you.
Of course that does not mean that if it works well you won't want to get extra stuff! It is, in general, an extremely effective technology, and it is working for me when nothing else has. Now I don't even LIKE the taste of cigarettes, and I'm only about two weeks in!!
I would advise NOT going with one of the Mall-type brands, like Smoke Everywhere or Njoy. They have a bad track record on both customer service and reliability of their product. Do some research in this group, read reviews, watch review youtube vids, and figure out exactly what will work for you, depending on your daily routine. For example, if you are at home on the computer all day, you may want a USB passthrough, and so would want a model of ecig that has one available for it. If you are out and about all day, batteries will be the issue, so a PCC charger case might be appropriate. The thing is this is NOT like Nicatrol inhaler, which is one model, only their cartridges. This is a very evolved technology spanning many types of models for many types of personal needs. But before you buy, make sure that you get a model from a reputable company. Ripoffs get destroyed here, and there are several ripoffs out there.
You have definitely found the right place to make a wise decision you will be happy with.
Good luck and let us know what happens! We really do want to hear about it!
Kurt