i got CoM first, after i played my cousin's copy and really like it, but i think that was at least a year after it came out, but i'm not sure.
i didn't get KH2 until a few weeks after it had been out. However, i did get one of the limited edition guides off of ebay.com, and it is in awesome condition, so i was really happy about that.
i bought KH1 off of ebay too.
I don't have any of the FMs, but I know someone who has KH2FM, so I play it at her house