After a terrible experience with some ersatz Tiger CDs sold online, I finally found a brand-new copy on DVD at eBay. (The vendor selling the CDs had been recommended to me, but they really weren't selling the real thing.) Bidding at eBay started low, but at the very end someone else kept upping my offer. I got it in the end (didn't want to start the search again), but it cost a pretty penny?something on the order of the amount that mrmacfixit quoted. Still, it was delivered quickly and was factory-sealed, just as promised by the seller, and worked beautifully.
If you want to buy a copy of Tiger, I suggest only that you be careful. If a (non-eBay or Amazon, say) vendor is offering it at a ridiculously low price or if it's not a new copy, give it the go-by. I expect that even some copies that aren't new will be OK, but how to know? Also, it's helpful to have the manuals and all that.
Buy it from a well-known source, and preferably, from one that has some way to return it easily or to replace it if it is in any way defective. I didn't know what I was doing when I got the CDs mentioned above but should have returned the disks right away (or never gotten them at all) when I saw that they looked different from the pictures of the real Tiger. I also should have known that I wouldn't get it legitimately on CDs. It comes on a DVD. But I didn't know. If you are in any doubt about what you are proposing to buy, either don't buy it or ask about it from someone who can guide you. If you don't know such a person yourself, there always are people like those who moderate and participate in these forums. They are terrific!
Very good luck!
Jenny
Be prepared to spend more than seems reasonable. Tiger is now no longer readily available, so many people selling it feel free to charge a lot more for it. Isn't it odd that other kinds of obsolete products sell for less than their original price, yet software like this brings a premium? Yet maybe you'll luck out, find a relatively inexpensive copy on eBay that no one else will bid on. Good luck!