I switched from the PS2 to the 360 for my dual box character. I found a used FFXI 360 on amazon or gamestop, can't remember for sure, for around $25. Then I bought the ultimate abyssea collection download online and used the codes for the 360 character. The 360 just needs to have the disc for all of the expansions; RoZ, CoP, ToAU, and WotG. The online code works for all the other downloadable content. The only thing that you have to factor in is that you will need to have different accounts if more than one person is playing at a time. Since I enjoy dual boxing, I have to pay two subscription fees every month. My point of this rambling post is that you can get your 360 running FFXI, with all of the content, for around $40 dollars if you can find some good deals.
Sarcasm is the body's natural defense against stupid.