It isn`t a myth that certain complex products were extremely expensive for average Poles. E..g, cars. If one had a car in 1960s, 70s or even 80s, they were considered wealthy.
E.g, average pay in late 1970s was about 5000 PLN. The smallest car, Baby Fiat, cost 87.000 at a state price. However, to buy it from the state one needed a special voucher. Without it, one had to visit an open air market where a Baby Fiat cost 120.000 plus.
Imagine how long one had to save to afford a simple car.
I drove Baby Fiat in early 1980s. I knew a few books about it by heart. With pro publications, I was able to pull out the engine to repair the clutch.