Glad you have finally settled into a new place, and also pleased to hear you've found some long lost treasures.  The sets you describe will give you some good returns, but nothing spectacular.  The Death Dragon and War Chariot of the Undead Legion will probably get you $25 to $35 each.  The Monster Manuscript Vol. I boxed set will likely get you $20 to $25.00.  Condition is critical in the amount you'll get.  The same sets in shrink would go for twice as much.  I recommend you list them as soon as possible on eBay for two reasons; more people shop on eBay when the weather outside is frightful, and I personally believe 25mm miniatures are fading from the landscape.

Reaper is now mass producing a line of 28mm minis in quality plastic which are cheaper and hold several advantages over metal minis.  They don't break easily when dropped, they don't require primer, and they are lighter which makes them easier to transport.  They are also less expensive than comparable metal minis.  Plus, 28mm has been the primary minis standard for many years now for most major manufacturers.  Get out while the gettin's good.  

Finally, I'd sell them individually and not all in one lot.  Good luck!  

Thank you both so much for your thoughts on these. I cannot tell you how much I appreciate your suggestions and help. I will discuss these with my better half and see if we should put them up for sale or not. If we do, I will get them up rather quickly.

John P.

My 8-year-old son Ethan used to attend wrestling meets down in OK, and it's pretty close to Wichita (1.5-2 hour drive IIRC).  So, if you're interested in popping up our way for a game sometime, let me know  (One of our members also relocated down to OK, so I'll also try to find out where; IIRC, he's in the OK City area as well).

If you want to avoid the eBay fees, I'm happy to buy them too