UK Flashcard Shop

I am thinking about buying a bunch of r4i golds 3ds plus, supercard dstwo etc. Just all the reccomended ones really, from china, and then putting them on my ecommerce store so that people in the uk would be able to get hold of these cards in a week rather than a month. For a small profit on my end of course. I'm just wondering whether there is the demand for a site like this?
Thanks