Very low quality. Cards are not plastic coated and don't slide well. But more importantly, after shuffling the cards just a couple of times some faces were teared. Avoid and buy a quality Bicycle deck for just a few pounds more, and it will give you more satisfaction and for longer.
THESE ARE NOT TAPERED!!. not even 'slightly' Disappointed as the reason I got these was for the taper. I thought the secret marking would be a bonus. I suggest the seller updates the title and description - perhaps what is actually on the product would be a good start... 'Magic Secret Mark Cards' Maybe they come in red or blue. Ones I received were blue. So I also suggest the seller writes this in the description too. Very cheap so not the end of the world, but it's just a pain to have to order another product and wait longer.
Ok...but I need my reading glasses on to spot the discreet markings....making it hard to fool my children and their friends, the taper is a bit more noticeable though and easier to perform tricks where selecting a car or two is one that I've mastered. My best trick so far though is 52 card pick up :)