Grievous is a very popular cinematic character and I understand that he is meant to be rare, but why does each of his shards cost so much more than regular shards in the shop?
10 Grievous shards costs 2,250 currency, which comes from 150 extra shards. This makes a 15 to 1 conversion, where 15 extra shards will get only ONE shard for Grievous.
For any other character, the cost is 300 currency for 2 shards. The 300 currency takes only 20 extra shards to make. Essentially, all of the other characters in the shard shop have a 10 to 1 conversion!!
Why is Grievous 15 to 1 and everybody else 10 to 1?? This is the only place to get grievous and he is 50% more expensive than characters that are regularly round elsewhere in the game.
Also, I'd like to point out that a player could 7 star 15 characters .....or 7 star Grievous!!! This is insane. Could the exhange rate be lowered? There was a temporary bug where Grievous's shards cost 400 shard shop currency for 5 shards, 800 currency for 10, and 2,400 for 30. I thought this was a miracle until I saw that it was being changed back.
Could the developers please look at this?