Beware of some of the HO Chinese figures available on E-Bay, as they are 1/100 instead of 1/87. Read the fine print. Depending on how many you need and your individual patience level, the unpainted bulk packs from Preiser are a good bargain. Woodland Scenics and Walthers also offer painted figures. Preiser, Walthers and Woodland Scenics offer figures with great detail.
Willie