The folks at FireStar Toys have just put up 27 new JasBrick custom minifigure designs for sale. Each figure is designed by Jas himself and come with hand-painted custom accessories. In addition to the newer designs, there are also several pages of other custom minifigures to choose from.
FireStar also carries a wide selection of official LEGO minifigures and parts in addition to custom pieces from BrickArms, BrickForge, Tiny Tactical, Arealight, Amazing Armory Ltd...the list goes on and on.
You can see them all at FireStar Toys.