I've just recently started purchasing PDF products because I'm hoping to publish something in the next couple months so I'm trying to get an idea of what's out there and what kind of quality stuff is being produced. So far I haven't been very impressed but this one was pretty good. Really I'm thinking more like 3.5 stars but why not err on the high side.
Formatting was fine, bookmarks good. Art was okay, most of it looked like uncopyrighted stuff taken from old mythology texts (which definitely fits the theme).
Curses - I had problems with most of these and would probably modify them for my campaign.
Mute and Drunkard - NPC only
Coward - too powerful - perception and Init used constantly, fear checks not so much - ALL my characters would take this if they could.
Echo - didn't make sense to me. I felt like it needed a lot more description. Can they repeat anything that was EVER said to them? That would be a record keeping nightmare.
Grotesque - seemed too weak. -5 to many skill checks for +5 to 1 check.
Unstable form - cool but too much record keeping (recalcing).
Wanderer - as someone else mentioned I would give it a duration. Plus not sure how to define "place you have visited". Is it a store, a house, a village, a country? Can you just not return to the places you actually stood or is it you can't return within 50 miles of a place you actually stood/slept/ate etc...
Illiterate and souless (especailly) were cool.
Mysteries. I liked these a lot more.
Clockwork - Incorporation needed more detail. Is there a recovery time - Is there prep time, material components? How long does it take? I mean you are replacing body parts here?
Wine - Not sure why raise dead was included in the spell list.
Snakes - seemed like a really cool idea but seemed under powered and more combat oriented. The visuals of a human making a bite attack or slithering like a snake really didn't work for me.
Moon - had cool powers
Loved - Old Gods (especially By My Name You Shall Call Me - very original and cool power), On Dark Wings, the fact that The Next Day includes modify memory.
Also thought the Summon Avatar feat was really cool.
So overall, definitely worth the price but missing some key details and some of it didn't work for me but you can't please everyone all the time.