A few Patches have been released by Great Eastern Entertainment.
Due to how they're supplied, actual retail values are unknown. Prices depend entirely on individual retailers.
Second-hand values don't appear to exist yet.
Currently, 9 patches have been made. There are two of Japan, and one each of Italy, Germany, America, England, France, Russia and China. The art used on most of these is the same as on the Funimation DVD box art.