These ESP cards are good quality, playing card stock.
The markings are a bit tough to read,
but since they are ESP cards, they can't be obvious due to the nature of the effects. In fact, the
description did not say these cards were marked, so that's just a bonus. Like if you are REALLY
stuck, use the marks. ESP effects don't really need marked cards.
I like that this
particular set has a 3 wavy lines card and no triangle card. This way you can number the cards in
your head as 1,2,3,4,5 if necessary.
Finally, the instructions come with an effect you can
do, and I immediately applied it to ordinary playing cards as well. It was a hit.
It would
be nice to have a box for the the cards, but for the price, it is an extremely good value.