Material for one Ronja 10M Metropolis device costs 2000CZK and building the device takes 70 hours.
Electronic parts for one Ronja 10M Metropolis device costs about 490CZK in Czech Republic. For Ronja Tetrapolis it is about 750CZK.
In Switzerland, where parts are more expensive than equivalent calcualted from CZK, Metropolis parts cost 71CHF and Tetrapolis 118CHF.
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