IDK, it sounds to me (say, if you are wanting to just add a bit of "different" flavor to an existing juice, that if you have particular flavors that work for you, usually, you do have the option of getting some unmixed flavors, or even one shots (they are premixed flavor concentrates, that typically are ready to go, and don't require a ton of steeping, you could slowly try that. For example, you could get some unflavored base in the PG/VG ratio you want, and try using some one shots, or even some "single flavors" that you could combine with your other juices (although, adding a drop or two of a particular manufacturer's flavor, like a few drops of caramel into you premade juice might work just as well.
DIY isn't hard, it does need a certain amount of prep, but you may be surprised at what you could create yourself, for far less expense. You don't have to go big or go home, either, many folks start DIY after buying not a huge amount of supplies and ingredients to see how they like it.
It is the cheapest juice, we still don't know how the FDA is going to handle "flavoring issues" down the line, it may be worth your time to do a bit of experimenting and build your skills before they're "truly needed" so to speak, and you may find yourself pleasantly surprise that YOU can make the best juice for yourself, compared to ANY vendor. That's been my personal experience, and DIY is now one of my favorite aspects of vaping, although I approached it very slowly and a bit timidly at first. I did not expect to enjoy my juices (or the process) and was pleasantly surprised by the ease of both, with a bit of preparation.
Because I DIY, I don't have a ton of recommendations for juice makers. My husband enjoys Heather's Heavenly vapes, although well, I'm not sure I'd call them the cheapest juice maker on the market and etc.
Best of luck, I hope you find what you need
Anna