not to be rude - keep dreaming on. even with the few things I have the shop site DOES NOT come close to paying for itself.
do you have industry background? can you fit? (properly not backyard crap!)
how are you sourcing the stock? if via transhippers out of the USA - good luck on warranty. if via chinese distros - same. good luck with quality levels there and quantity. most want 100+ per item orders PAID UP FRONT.
as I said keep dreaming. I'm a 20 yr veteran in this field and the last thing we really need is another online shop saying we can get this cheaper than XXX..
there is such a thing as profit margin that keeps the main shops open. erode this and you will be wondering where your store went that you ask all the dumb questions to.