I'm impressed! This is very well put together. There are some 'minor' errors (from the writers, these will be corrected in the next patch) but this didn't detract from my deserving 5-star rating!
The items are well constructed, with something in here that everyone will find useful. I don't believe them to be OP but each DM to their own.
There is enough variety in the new spells that will see many of them used within play (I'd suggest surprising your players with them used by an NPC during play first, just to keep them guessing (evil grin)).
Well worth the money paid and looking forward to more from these authors in the coming future!
[5 of 5 Stars!]