Should you make free "test assets"?

yaschan

Every now and then I have been asked to provide customers sample of my work by making 3d models to their specifications in order to "prove my worth". What do you think?

I made a video about this.
http://www.youtube.com/watch?v=D-VVSeqL-B0

CrackRockSteady

very similar discussion here https://polycount.com/discussion/203390/story-time-payment-for-art-test-is-this-the-norm

Short answer (IMO): it's bullshit