People say they have seen a CS from from lesiath after ke, but I have yet to find a screenshot of that. Even so, one of the later patches must have taken them out. Cant count how many my clan have killed and havent gotten one.
Buying a cs is simply an investment. Yes it's a good shield but if they stop dropping they can only rise in price, even if you overpay for one now. It's same with dagger def, sense they dont drop anymore it's only a matter of time before there are hardly any left on the server. People can quit game, acedentaly ncp them, ect.