No, there aren't, excluding the card box (which as stated above is just a noob trap).
The point is that we really don't know of Amazon wants to change that. So far KR and RU have the same stuff in the shop just different prices.
And generally shopping isn't that profitable until you're willing to dump loads of money to craft legendary costumes to then sell for gold. While these give stats it's a) a negligible amount and b) you can farm gold and buy one by playing (albeit takes some time). All costumes give exactly the same stats so it's just a matter of preference.