The errors are not HORRIBLE, but they are definitely there and might drive a novice crocheter to throw down his/her hook.
Luckily, the blanket is VERY symmetrical, and if you use stitch markers and count carefully before advancing to the next section/row, you should be ok.
The kit is on sale now for $19.97 which I suspect means they are coming down to the end of their inventory for it.
The blanket is definitely worth the headache, the FIRST time. Like I said, don't know when I'll attempt to make another one, if ever.