What's the cheapest network analyzer on the market?

https://www.edaboard.com/viewtopic.php?p=840776#840776

Depending on features the price can vary from S20 K for junk to S200 K for something really good.

Consider the cost for cables and calibration standards. Good adapters and connectors are also necessary and can add signidficantly to the price.

You get what you pay for.

This question is a little like: "How much does a car cost?" Any answer is subject to debate.