I found this site the other day
https://www.wholesalersusainc.com/index.php
I ended up buying 4 bags of the large glass gems and one bag of the small and the total cost with shipping was under $12...works out to about $2.40 a bag for me...
They said they would be shipped out to me on Tuesday so I will report back if these are really nice ones - i.e. rounder with less imperfections than the ones you can find in the floral sections