That's disappointing because I feel that for Bitcoin to take off, it needs places that are willing to directly use BitCoin as currency for physical tangible good without having to use a middleman of converting Bitcoin into Amazon gift card or having someone else buy it for you.
If you want to get good info out of people, ask more precise questions. Your title and OP focus on the question of whether there is still a market for mining with video cards. But it looks like your real question is whether there would be a market for computer hardware in general, for whatever purpose, paid for in BTC. If that is really what you want to know about, then focus on that - the extent to which there is a market for video cards used for mining seems peripheral, unless the only hardware you are interested in selling would be video cards.
I suppose my question in the post and post title have different question but yes ideally I would have liked to focus on what miners use the most and have the highest demand for.
I'm pretty serious now that I have some decent information. I look forward to putting up a basic site together at first and then work my way around building a full online shopping site.