Madara 5kage's price was 200 per frag so 16k, which is normal for new releases such as edo deidara was. First of all, you need to understand the update to the skill books system which allows you to skill break break certain ninjas. Your first skill break might give you good upgrades or it could be the 7th, it's all about RNG. Think of the purification system for your equipment and the number of protection items you need was so you can protect the skill upgrade you don't want to lose.

Based on the previously releases of certain ninjas and how fast they released them, it could be anytime before 2018 ends. Having him in the summer is way too early. In the fall is little early but in the winter should be fine since that's about the same time in China.