I have listed seven of the 1970's vintage Monogram kits from their Armor Series on Ebay. All but one of these kits is still sealed. They are 30 years old, so the boxes have aged, but overall are in good shape.

http://search.ebay.com/_W0QQsassZhetzerman

For those younger modelers, these kits came with tip sheets created by Sheperd Paine that introduced many of us to the potential of dioramas. To see scans of the original sheets, check this site out: http://www.itzproductions.com/Misc_Pages/shep_paine.htm

Also a few 1/35 Italeri and 1/72 ESCI kits are listed for auction as well as a Verlinden Pak 43/41. And to shake it up, I have a 1/24 Tamiya Peugeot 205 rally car for those that may want to try out their weathering skills on something different. $.99 opening bid on most these kits.

Thanks for looking!