Preordered on Good Smile literally 9 months ago. You might need to do some hunting to track them down now since orders are closed. Amazon seems to have them up for preorder. (check the "Frequently bought together" section for Chito and the Kettenkrad) I've personally never used Amazon for anime figs but I imagine it'd be a pretty safe bet.

Sometimes if you're lucky they do rereleases but usually only the biggest, most popular series get those.