If you do not want to go $22 for 30ml then you will be pretty much stuck with DIY.
$22 for 30 ml is cheap at most places in the states. You can find Dekang for about half of that some places, but it is pretty sucky.
absolutely false. plenty of $10-15/30ml vendors for top notch quality juices. ECR always has vendors doing huge discounts and promoting their juice on top of their .50 cents/ml retail price.