I realize that in some countries it's impossible to find original console discs (or they're outrageously expensive after import tax). I know where I'm living now (Thailand) it's like that, so I understand how it feels. If you find an original disc, it's going to cost you twice what it would in the US most likely. That's why people mod their systems and buy copies here for $5 or less. Even the official Sony stores here sell the PS3, but they quit selling games for them because they couldn't compete with the pirated market.
However, we don't help with piracy questions here. All we can tell you is to shell out that extra money for original discs or check places like your local Craigslist and such for cheap second-hand original games.