I got a free booster of these with another order. They are handsome and it's an interesting concept. I bet it'll make finding treasure really exciting for the PCs. One major flaw: Why random packs? unless you want the entire set, you have to roll the dice on a pack. I don't give out random treasure, so I don't want random cards. Also: they're kind of stupid for consumables (potions) and unless you use pencil or something, once you fill in the details on the back, that card can never be a different item again.
I'd much prefer smaller, predetermined packs focused around item groups (a pack of just armors, just weapons, etc) Since they're random, I probably won't buy any.
Pros: has made tracking combat a breeze, even with complicated delaying/readying; comes with a ton of magnets so it's not a big deal when you loose some; made my game more fun, which is probably the most important consideration.
Cons: smaller than expected, only 8.5x11; magnetic core does not go all the way to the edge so magnets will not stick there; flimsy: magnets are thin and flexible, board is kind of floppy. I ended up gluing the board to the cardboard inset that came in the package and that has helped
