I had seen a bottle of VG at my local Walmart and was wondering if anyone has used it in their e-juice? WizLabs is cheaper on VG than Liquid Barn (I used to be able to get it from them as 2 250mL VG bottles for 6.99 but I think it goes up when you change to a wholesale account) But I'm on a budget and need to take a few things out. I use mostly VG, so a 250ml is probably the lowest I should go. Any thoughts on the Walmart VG? It's USP grade (at least that's what the bottle says you never know these days)