Hi simon.
Heres a pitch..
I am looking to start up an e-commerce site. This site will predominantly, be targeted at young adults. The site will offer designer brands for a fraction of the price to its costumers. You'd have to be a member of the site to get access to the sales. The sales will last for a period of upto 2 weeks at a time. The products to sell would be sourced from many routes - including the designers themselves. A lot of companies like to sustain their image. Thus, do not really do the idea of 'sales' and most of the time, the problem is that there is overstock from last season etc. So we'd practically be playing the middle man in the process by offering them a platform to sell in style and also, sustain their image as a brand. I have already come up with ways to get the stock and have been selling online. however, lack funding to expand this.
Moreover, yes i understand that there are already companies doing this already, but most lack a niche.
i hope you understood my idea.