You should really lower the rate for buying tank coins to 1 Kred per tank coin, having to pay extra for the same amount of currency is just ridiculous.
Here's pretty much what this game is about: Monkeys pop balloons which give them money when they explode because apparently monkeys are scared of them..
It's good and bad that you can go to as many websites with ShellShock Live 2 on them as you want and you can use your same SSL VET code. I mean, it's good that players can use it on more than just one thing, but it's kind of bad that kChamp is being ripped off. I mean come on, say your code is worth 200 tank coins. On one website, you can buy a weapon pack and maybe a tank pack; on another website you can just buy a year or so of deluxe..
Conclusion: kChamp is giving away twice the value for something, but players also get to try new things.