I did some market research and found a set of excellent used wheels!
Enkei wheels for Honda Civic Hybrid 2007 (they are Honda factory wheels).
Diameter: 15 in.
Fit width: 6j.
ET: 45 mm.
Center bore: 64.1 mm.
Bolt pattern: 5x114.3 mm.
Weight: 7.0 kg - great, especially comparing to my current setup!
They have almost completely same specification as Auris' 15in factory setup, except center bore which is easy to fix, so should fit perfectly.
They cost me USD 130 only (including delivery, wash and damages check).
Now I have to find good tyres until summer, to be continued...