I haven't wasted any money.  I got a cig-a-like I still love.  Then the bigger batts and some different clearos, Nanos, T3s [love those],  I am using them all until they die and buying more of what I love.  Fortunately, even if a juice isn't my favorite, I have found it vapable enough to use it up.  I bought it, I'm vaping.  I don't like to waste money.  
I am spending some more on a mod but I think that will be worth my money.  I tried hard to research and understand and thanks to some of the nice folks here, I hope to be happy with my new purchase when it arrives.
I only smoke a few cigs now and that is priceless.  I may give the last few up soon.  No pressure.  I have NOT smoked hundreds of cigs since August.