I once bought an expensive sampler unit from them over $3000
they talked me into a demo unit for 100 off
with in a week the unit had an issue, one of the notes was changes pitch randomly, rendering the sampler useless.
when I bought it back they said they would look into it
a month later they said they could find nothing wrong.
I got it home same thing again ,returned again same answer again
I asked for a new one, they refused and I was basically stuck
and ripped off.
don't buy any used or demo equipment from these people
you will be ripped off!!!