Check this:
http://www.schallplattennadeln.de/
You get re-tipped cartridges for a reasonable price, don't ... repeat ... DON'T buy new old stock on ebay as the materials used tend to age and the needle will break / not work for long...
I bought a MMC2 Shibata there and I am more than happy, delivered in no time (2 days in Germany) and really good sounding
Best regards
Stephan