Never buy these unless they're for your six year old. My fiancée bought me two decks. She is amazing but these are not. If you riffle shuffle them they maintain the bend after one riffle, and I was going easy on them to test the waters. They have a weird texture that almost feels oily (badly done plastic coating I guess) and don't fan too great. I think they're made out of roughly cut cereal box cardboard because they're just stiff and nasty. I cannot recommend these cards in any way, shape, or form. Half a star out of one million stars. And that's being generous.

For clarity, that was an in-hands riffle. They don't have the bendy issue with a table riffle, but I still can't recommend them unless they're: A. For your kids, or B. Just to have experience handling all decks in case someone hands you one of these and says "Do a trick, magic guy!"
Also, the edges are too rough to do stuff like faros very easily.

Here is my review for STREAMLINE: https://www.youtube.com/watch?v=5x_jU3ggbR0

They are good for practice, good for tnr tricks, good for gameplay
But yes - they are low grade cards sold in grocery stores