The second auction WaOnFire posted appears to still be running. I'd put the value at around $40-$45 for an excellent to near-mint condition complete copy, with mint copies going towards $55.
Heh...that reminds me...I remember buying a Final Fantasy that was "boxed with manual" (note that it didn't say complete anywhere in the title) according to the title. In the description, it said it came with the maps, as well, but still didn't use the word complete for whatever reason. Seven-day auction, and I sniped it with 45 seconds to go and won it for $9.24 plus $3 shipping. This was around Christmas of '04.
-------------------------
Answering any and all questions related to video game collecting. Guaranteed true and honest answers from a man with nearly 20 years in the community. Prices for these answers vary depending on the question. For all inquiries, please PM me.
Edited: 11/03/2007
at 10:53 PM
by mb7241