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I've seen some websites that explain each ingredient and where they're usually used! So it's gonna be a difficult process obtaining all of them from one place.for example the flavor substance is sold at any supermarket just ask for the food coloring that is usually used for baking or candy making so for that check @Cozmo or @Safeway . Nicotine im not really sure, but you can definitely check any smoking shop @Al Baik For Smoking for example can help you. As for Vg, you can also ask for it at cozmo or safeway, its the type of glycerine used for cooking.. Pg is harder to find as its the one used in fog machines so im not really sure who sells it around here. Hope this helps. good luck
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