This week events are one of the best so far (for a while now). You can actually get 3 rare ninjas for the prize of 1.

For instance, if you max out lucky star 4 times (20k), you can get Edo Deidara (from Fukurokumarus deals), masked man (from the frags, oasis are really generous about his frags), and angel konan (or hokage minato if you prefer him). And if you are really lucky, you can get Edo Deidara from lucky star as well, so you can upgrade him to 4 stars (or 5 if you are really really lucky and get him from the lucky star all 4 times).

The fukurokumarus deals also gives a bunch of stuff for power.