Yeah, I have three different versions of IV for the PSX and I have V for the PS2. I actually have two copies on V because I use one box for the translated game.
This is what I am missing to complete my collection:
Dragon Quest III - Famicom Brand New in the Box (Japanese games were not sealed)
Dragon Quest IV Limited - Famicom (I have only seen one copy of it) I have pics of it so I know it exists.
Dragon Quest V - SFC BNIB (I have a mint copy but need a new copy)
Dragon Quest VI - SFC BNIB (I have a mint copy but need a new copy)
Dragon Quest VII - PSX - Japanese Memory Card Case for PSX
First three copies of Warrior World (Spring 1991, September 1991, Spring 1992)
A few Japanese piano books
I stopped collecting anything newer than DW7 and I do not collect toys or stuffed animals (I do have about 500 different Dragon Quest pencils and a bunch of pencil boxes).
I have also just listed my Gameboy & DS lot with guides on eBay for $300 BIN but I haven't gotten any bids or bites...