I bought a MacBook Air in november 2010 with Iwork preinstalled. Now, I've been silly and have lost the USB that had backup of Snow Leopard and Iwork. I am considering buying Lion and doing a clean install (wiping the disk first). But that means that I'll lose the Iwork package. Does anyone know if I'll be able to download it for free in the App Store? Or will I have to pay for it all over again?