I apologise if this is not the sort of question appropriate for MO; it does however seem that mathematicians are the most likely to know the answer:
Many of the Chinese mathematicians and graduate students at my university have softcover copies of some of the older Springer GTMs, usually printed on thin paper with Chinese characters on the front cover, but with the actual text in English. Someone said that they can be bought quite cheaply in China and are legitimate `Chinese Reprints' of the original books. Internet searches on both Google and the Springer website turn up nothing, however, so I presume the origin of these books is somewhat dubious:
Does someone know the actual status of these books and has anyone purchased one outside of China?