How to set vehicle purchase price in NewGRF NML?

[AlphaCentauriBear]

Searched through documentation but didn't find anything.

[AlphaCentauriBear]

Weird. This should be very simple thing to do. Is it not implemented?

[2TallTyler]

You're looking for "cost_factor", which is available as both a property and a callback. It's a multiplier to the base cost, not the amount in GBP, because the base cost can be changed by other settings and GRFs, scaling purchase prices with it.