I've wondered that too, after all they are meant to be food quality so in theory you should be able to use them (in very small amounts!) in cookery?One might ask whether flavours for e-cigs & fluids are also used in any other sectors ...as they are, or with subtle additive changes.
The LF prices are as good as the state side 4Oz for $13 = 118ml so really not alot in it about £1 more so from now on i guess i will be getting it from LF thanks @Bryan123456
Make sure you use the discount code from this site and you get 10% off flavour concentrates. If you are a regular shopper there, it's well worth registering.