I usually get mine from Amazon - make sure that you type in 'LICENSED' or that it says 'Studio: Ya Entertainment' - I've gotten 2 bootlegged, and one was great, but the other had typos and when it got to the last 2 disks, it was just gibberish - if you want a cheaper bootleg, you're really going to have to ask the seller...usually they don't know much about the product, though...that's what reviews are for ;)
You can also get them directly from Ya Entertainment (YesAsia.com) but they're usually pricier if you get them from the website