Do you tell your clients that you are a reseller? Have you ever had a contract gone sour because of this?

I don't mention that I am a reseller. I don't think most of my client base really knows about reselling, but I just think that it might lower their trust in me, like they should be getting a better deal (I'm not robbing them, I don't make a lot on reselling). No one has ever asked me any technical questions that would lead me to revealing that I'm a reseller, not that I hide it, but I just don't make it public knowledge.