Well sometimes it's pretty bad. You get sad or mad.
But usually they answer back, and if not, sometimes you find a better deal somewhere else. As long as the person doesn't give up it's a win win situation. Take me for instance, I was looking for N. ventrata since last year and had miserable luck. I finally found it on this one site but they didn't have any, even after i asked them directly. It was like $30 for a small plant. This year I found the ventrata on a different site. The actual website said they were sold out, but when i asked them they said they had one and sold it to me. They sold it to me for like $15 i believe and i was expecting a small plant but this thing was huge. It had 5 growing points and the plant stood, maybe, 10 inches. So I won.