Oh honestly; C in GCSE maths - you'd best borrow my notes

Just kidding! They were all rubbish anyway!
Right, if you look at Cards Inc's website they have changed theirs to 24 packs *phew I don't have to do any complicated maths*.
http://www.thecollectorzone.com/product.asp?pid=2553And Richard Wheat -
http://www.my-preciousss-collectables.com/shop/index.php confirmed that all his packs were 24 packs too!
Although the odds are right (to as accurate as I can make them) we don't have any info on how many cards they keep back; perhaps for executives of the companies, for JK Rowling etc, so that explains why there are around 14 inserts a case and not 17 as expected!