I wonder since both level 52 specialized leather set are more or less the general leather set minus something. As example for the monkey set ou get like 2 agi more and may be 1 str but you loose like 25 res. And the bonus to Combat art is just the same. The same happen for the priest oriented set. Such a situation does not occur for the next 3 set (the 62 ones). I just did today one special set and i do not expect to sell it (even if i cut down its price).
