An alternative: If you have a CVS Pharmacy close by, get a bottle of their Pure Glycerin (USP)for about $5 for 6 oz (177ml).
Great for vaping.
CVS Pure Glycerin USP - CVS pharmacy
I also vape 100% VG & I've used it for over a year...great stuff. Nice clean flavor (subtle sweetness), and produces great clouds. It's as good/better than anything else I've found, and the price/convenience can't be beat. I dilute my 38mg nic juice (Mt Baker 100% VG) down to 6mg/ml with it and add my flavorings. I actually prefer it to other VGs I've bought online that were vape-specific..
Have fun...