[jandrese]

Presumably from the bike thieves. There's a glut in the stolen bike market so the price competition is fierce.

[antisthenes]

It seems like that that point the bike thieves are just a bike rental company.

You get the bike for < 20 Euro and then, presumably, at some point in the future it gets stolen again, but you already got 20 Euros worth of use out of it.

[CodeWriter23]

"Discount Variable Duration" rental program.

[rafale]

Efficient market hypothesis proven.