Mateusz Konieczny
Prices are listed at http://www.latarnik-kopice.pl/material,katamaran-albatros--przeprawa,65.html

130 zł (=28.4 EUR) for crossing for up to 6 cyclists with bicycles, + 10 PLN (2.18 EUR) for each bicycle.

So they would charge about 33 EUR for two people.

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I would actually consider removing that, this is quite extreme pricing.