Since POCKET doesn't have a real value (yes,it's tradeable on Bitshares but with little or no action there :-( ) so it's quite hard to know what you actually get.
You can send a single POCKET as a reward but with no value it's worth the same as sending a million POCKET as a reward.
For now (in my opinion) POCKET is more a kind of appreciation token and far away of being a reward token.
I really would like to see more interaction on Bitshares (it's easy and not complicated to trade there and absolutely free, also check @pocketexchange and @blocktrades)