Can the same flavors of different brands be considered easily substituted?
Like Coconut TFA for Coconut FA, Graham cracker TFA for graham cracher FW? I'd like to follow the recipes, but having to buy multiple brands of the same flavor can add up quickly and limit how many flavors I buy.
Some flavors are way different between brands while others are pretty close.
After you become a "flavor collector" like many of us here, you will usually know which ones might work for subs.
If you're on a budget try subbing anyway as you might find something decent even by accident.
Thing is... you may not like a certain recipe even using all the correct flavors.
Just never know cause so many of us have different tastes.
As your example of graham cracker:
CAP Graham Cracker has a hint of Cinnamon to me.
It may work just fine but depends on the recipe.
My favorite is TFA Graham Cracker Clear because it's neutral, without cinnamon.
The regular TFA Graham Cracker is quite dark in color which I'm not too keen on due to coil gunking from those dark ones.
Taste is close enough where either one should work.
FW is a bit different than the above but it's not a bad flavor.