I think my bikes cost me a little more...
My MTB probably cost me $2000 all told, and I may have 2000 km on it (maybe) so $1/km
My road bike is a little better. I think it was $1600 when I got it. I have probably ridden that one 10000km so that's $0.16/km.
My Touring bike cost me about $300 to build up from a new frame and new
ish parts.. I have probably put 5000 km on that one... so that's $0.06/km.