The other thing to bear in mind is that they're a total pain to get working. I've wasted hours trying to get one to work, and in the end the novelty wore off and I just played it on my PS2 instead. And, those who do get it working are generally unimpressed by the quality of gameplay.
You can find a few by googling PS1 emulators. Just don't waste your time trying to figure out why it doesn't work.