I have rolled back my OS to Leopard and am now in Brazil (from UK), can I get a copy of Snow Leopard at the Apple store in Rio de janeiro?

Hi,

I have rolled back my OS to Leopard before coming to Brazil not realising I needed my Snow Leopard disc to install anything onto my mac. I really need a copy of the snow leopard OS. Is there anywhere I can get one? Do Apple store Rio de Janeiro have them? I am in Rio for a few more days and could pick one up?

Any help would be really appreciated.

Thanks

Pete