I will pile on - for the barebone testing that they do they charge top $$ for their vials for whatever reasons.
I think EZ, Simple,
Atomik, Peptira were the first movers, and gathered some fan following. Then they became complacent and stopped any improvement.
I've not understood until now why EZ AMP prices are so high for the barebone testing they do when there're so many others now doing full panel testing.