You can wait for a nice deal on ebay, i bought my rare DV 23RS MR (with Micro Ridge stylus) NOS from USA for about $450-500 one year ago. This is very close to what some people change just for a drop of glue and a new stylus tip. So i think you can buy a whole cartridge, even unused in the box.
Some other cartridges can be found too, but for $350 it will be hard to find anything close to DV23 Ruby, those new MM are not that good.
In my opinion it is much better to pay more for original cartridge than to mess up with retip.
Some other cartridges can be found too, but for $350 it will be hard to find anything close to DV23 Ruby, those new MM are not that good.
In my opinion it is much better to pay more for original cartridge than to mess up with retip.