Yes, I made the investment and purchased a pair of slightly used studio strobes. Yes, it was an investment because I expect some money from them in the future. Hey, I’m a pro, right?
The strobes were advertised on a Hungarian discussion forum and are exactly the brand that I was planning to buy. Not anything fancy, but sturdy-looking  and sold with 3-year-guarantee as new from which 2 is still remaining for these used pieces.
It is actually a strobe set consisting of two strobes with light stands and reflecting umbrellas and a 100cmx100cm (roughly 40×40 in inches) softbox. (Power cables, sync cable and gear bags are also included.)

The strobes have a nominal power of 400Ws and adjustable between 1/64 and full power, their recycling time is supposed to be between 0.2 and 1.8 sec (not planning to measure it ) and the flash duration is 1/1000 sec. They can be fired by sync cable and as slaves (mastered by an other flash) as well.
The strobes were made in Korea and branded for the Hungarian distributor.

Even though light meters are dead to Chase Jarvis I purchased one to be used with my new set. It was the cheapest available on the Hungarian market (around 100 USD). It’s so cheap, that I managed to break its sync connector on the very first occasion of trying to use it. (It did not fire the flash on pressing the button, so I adjusted the connection and it happened.)
Not having a light meter did not stop me testing the things. I made a few shots checking the resulted histogram on the back of my camera, and modified the settings accordingly. Chase might have been right.

Stay tuned for my first shots with this equipment.