So I went ahead and bought Leopard last night at the release. I haven't had time to do all the pre-installing work I want to do (need to buy a HDD and want to do a proper backup) so it is still packaged. I was thinking today that it would be nice to save the approx. $30 (including tax) and just order a copy from Amazon. However it would be nice to not wait for the copy from Amazon. Could I open the copy of Leopard now and then buy a copy of Leopard from Amazon and return it to the Apple Store when it arrives? Thanks!