Wargames Factory is a real inovator in that they create figure sets that are plastic, a large 28mm in size, with customizable heads and body parts and accessories. I picked up a couple boxes, infantry and cavalry for about $20 each. The infantry make 36 figures and the cavalry 12. They also offer spare bodies in groups of 12 for sale as well as any other parts, on ebay and at their website. I ordered more and ended up with 144 marching figures, some of which are here:
They paint up well, and they really are nice and sturdy. The hard plastic bayonettes have taken some abuse and they remain OK. Wargames Factory is now releasing their artillery and mounted commanders sets. I highly recommend these for anyone wanting to try a new period without a lot of upfront cost.
They also do ancients, samurai and World War 2, and fantasy as well.