No, it is not worth it.
PVC figurine is low quality. The CE game is just the regular game in a different cover and a dvd of how they made they game that you can just youtube in a few months. The book is nice but will be half that price 6 months after the release, same with the cheap dragon statue. This is marketing for profit, and it works. But it won't come off my dime. As I have said in the past. My cousin runs a comic book store and sells PVC figurines, and is baffled by the $150 price tag they are asking for.
Always nice when clueless people make clueless remarks. The statue is low quality... really? Because you have a secret early edition one right? Ohh that's right.... you don't, you have no idea what quality it is outside of a picture. The fact is the company that is making them are known for high quality game statues, most in $300-$400 range. Yes it's PVC but it also need to be produced in quantity in a short period of time. PVC does not mean low quality.
And keep dreaming thinking you will ever get the art book for $20, it will NEVER happen. They may NEVER release the art book separate, actually I bet they don't. You will find people selling them, but I doubt you will ever see one below $75.
Your so called cousin should really know a thing or two about collectibles working at a comics store, apparently not however.