Yeah, unfortunately the flavorings are the bulk of the cost of making ejuice so a lot of vendors cut down the flavoring to boost the bottomline.
When you start making your own you can push the flavoring to the limit, and always dilute it back down with unflavored nicjuice if you go overboard.
(although judging by your tastebuds, by the time you get to that point you'll probably have gunked your coils solid)