In order of purchase...
-Phantasy Star II new (which I traded in at some point around 1995
)
-Phantasy Star used, bought from a friend after getting hooked on PSII. Included the box and manual.
-Phantasy Star III used, although only about a month after it was released. Included the box and manual
-Sega Smash Pack (includes PSII) - came bundled with Dreamcast
-Phantasy Star Online ver2 for Dreamcast - new for $4.99 on clearance
-Phantasy Star Collection for GBA used off eBay, just the cartridge.
-Sega Genesis Collection for PS2 (includes PSII,III,IV) new
-Phantasy Star II used off eBay, included the manual and in decent shape.