Q: How buy apps in appstore without credit card for organization?

You can't: however you can buy Lion on a USB stick from an Apple Store, where you could pay cash - though it is rather more expensive than in the app store.

Hi...

You can purchase iTunes gift cards that can be redeemed to purchase Lion.

Choose your iTunes Gift Card - Apple Store

To redeem a code just click Redeem under Quick Links right side of the App Store window.

Make sure you purchase a card(s) that can cover the price of Lion $29.99 plus an applicable taxes or fees >  iTUNES STORE - MAC APP STORE TERMS AND CONDITIONS

Brain fart right?

You know that you can use iTunes and Mac App Store gift cards.

You did, din't you?