Based on my experience Stanton/Pickering starts from $350 for models like 881s or XSV3000 and goes up to $700+ for top of the line models like 981 or 7500 nowadays. It is interesting that apart from traditional high output MM (about 3.2 mV) there are low impedance and low output (0.06 mV) MM versions. The low impedance versions can be used only with MC phono stages or MC Headamp (or very high gain phono stages).
When you’re looking for Stanton (or Pickering) make sure it is not the low impedance "LZS" low output version, this version is not compatible with your MM phono stage.
Send me PM and i will email you another interesting review by B.V. Pisha (same critic who reviewed top of the line Technics cartridges).
P.S. Mr. Fremer interviewed Mr. Pickering and uploaded audiofile, it was very interesting for me to hear the voice of the genius. I hope you can google it. It was his last interview and he was over 90 y.o.. He said he wasn’t happy that he sold the company to Stanton who was his plant manager before.