You should be able to find the first one for $10 or less. It started going on sale for $19.99 all the time well over a year ago. (360)
If you live in Knoxville you can drop by the bar sometime and I'll give you a copy. I ended up with 2 or 3 due to system sales and bundles. Such a fantastic game.
New hacking mode in 2 appears to be very easy and quick. Playing the pipe game in the first Bioshock was sometimes cool but usually just time consuming. I don't remember hack darts in the first game but it's been a long time since I've played it. With darts, you can shoot machines and then hack them from afar.