Don't sell them. Trust me, playing with those vintage stuff is quite an experience, and looking around for suitable scale models and terrain is an act of pure love. It makes you feel like those pioneer wargamers of old...
Just in order to keep the hype: I have some articles in my blog which are SWMB themed, but I'm particularly fond on this painting guide
Please zoom the pic. It's the only 25mm miniature whose painting I'm really proud of.