I really like my kanji flash cards! I keep the set I'm studying clipped onto my bag, so they go with me almost everywhere. They're holding up well so far despite not being in their protective case most of the time. And they're super helpful to quickly glance at while I'm on break at work or anywhere else that I have a quick second. Definitely a worthwhile investment for me.
The poster is A3 size. It is exactly twice the size of A4 or 11.75 x 16.50 inches (29.7 x 42.0 cm) in size. On the poster, Hiragana is printed in large font and Katakana is printed in small font. I personally find Katakana much harder to learn than Hiragana even though Katakana looks structurally simpler. Therefore, I purchased a poster from Kioku and posted the poster on a wall near my desk at home so that I can easily look up whenever I study Japanese.
For what this costs, I thought the quality would be a bit better. I opted for the more "premium" version that came in a wooden box. The box feels like it is made from the wood old plane models are made of. Very light and flimsy. The cards themselves are made of a pretty thin card stock that won't hold up any better than my index flash cards.
On the positive side, it is nice to have the kanji, it's readings, and some common words the kanji is in. The print quality is also good. Sharp and easy to read.
Overall, I just feel like it is not good value for the money. I f I would have known the quality before hand, I would have just stuck with my index card flash cards.