Just placed an order for a NanoVNA on eBay. The waiting can start.
Of course you can’t compare this to a VNA that costs several thousands of dollars/euro, but for amateurs like me it’s good enough.
I searched for a kit with the cables and calibration kit and the battery, always handy to use it portable.
Something to read while waiting : https://nuclearrambo.com/wordpress/comparing-nanovna-with-the-keysight-fieldfox-n9952a/