There's a copy of MI2 here
for $5 but it comes with a whole load of other games too, so the shipping might be a bit much.
In my experience you'll be able to pick up an original boxed MI2 for under $60, or a re-release or unboxed version for around $15-$30. Just wait for some more sellers, eBay changes constantly.
Alternatively, contact some European sellers to see what the postage to the US would be. You can get the game cheaply enough
and it might work out cheaper overall.