do like I did to decide on best price:
choose a brand - Flavor Apprentice for this example
TFA sells 4 ML for $1.40 - that's 35 cents per ML
Supplier "A" has 10 ML for $3.99 - that's 39.9 cents per ML
Supplier "B" has 15 ML for $5.99 - that's 39.9 cents per ML
Supplier "C" has 10 ML for $2.99 - that's 29.9 cents per ML
Supplier "D" has 6 ML for $1.65 - that's 27.5 cents per ML (also 20 ML for $4.15 - 20.7 cents per ML)
not much thought required as to where I was going to get mine from..
Wizard labs carries Lorann's and TFA flavors for $1.49 for 8ml (18.625 cents per ml). Seems like a no-brainer to me, unless I am missing something.