I found pg/vg to be relatively expensive when shipping is factored in. Shelf life is not an issue, nor safety. Your 250ml pg and vg is only a month supply for you, and you have your fiancé too. When you rip through that 250ml you'll be ready for gallonsI just spent 66 at wizard labs...got a bunch of test size flavors... only got 120ml of 48mg Nic. Vg base. Then 250ml of vg and pg. Plus syringes and a few empty bottles.... probably got like 12 flavors to try lol I'm a bit leery about working with anything stronger for Nic as I have two young kids at home with me.even though I went to college for chemistry and I am well aware of safe and proper handling I would rather not take the chance... Plus only going to be mixing 8, 6 or 3.... maybe up to 10 for stealth vaping at work lol so should still last a while... once I get a couple batches made and I'm sure that I will continue doing it then I will buy by the gallon lol thanks for the info
If you have Amazon prime you can get pg/vg with free prime shipping for $13/qt or liter which is not bad. The gallon deal here is better and what I will do when I go through the last liter of vg I ever buy. Nothing wrong with sticking your toe in the water for your first DIY. Just showing the path to lowest cost.