But for people collecting, they would want Japan versions and those used CDs in excellent condition selling in ebay, is much cheaper than a brand new Japan version CD. not to mention some titles available in ebay is rare.
places like hmv, cdjapan and yesasia dun have them anymore. e.g. Fly High, Boys & Girls singles.
There are a few sellers that definitely sell originals, for eg. mindofjapan, dora_ts. There is a specific type of listing in ebay, selling all the CDs at 0.99, or 0.89. THose are definitely bootlegs. even if they're not, they're made in china. and i can tell u the quality even the originals made in china are quite bad...