Four stars. It's a pretty good collection, a lot of prompts for the price. I've found several really useful ones that have saved me time and sparked some interesting ideas. However, there's a fair amount of overlap and some prompts are pretty generic. A few were also poorly written or didn't really work as intended. Overall, a solid resource, but don't expect every single prompt to be a goldmine. It's worth the cost for the sheer volume alone.