I bought these a couple of months ago when they were offered as a kids woot deal. My 18 month old son loves playing with these blocks. When he didn’t quite have the dexterity to stack regular building blocks without knocking them over these were great because he would just have to get it close and the magnets would hold them together and he wouldn’t have to worry about trying to balance the block perfectly on top of the tower of blocks without knocking them all over.
They are very high quality and very well made. I know the price sounds expensive but I would recommend purchasing them.
Strangely enough, if you put two cell phones side by side, they will throw off the compass as well. We had 2 iPhones that showed North being in 2 different directions (and neither of them was actually North!).