I would like to sell stuff via amazon fulfilment where you send all the stuff to an amazon warehouse it then gets uploaded on to their website and hopefully sells. My question is regarding Shabbos you can not switch of your stuff from the website once it is on (unlike if you have your own ebay shop or if you are selling it yourself on amazon) if so is this a problem of selling on shabbos? I will point out that you only receive the money from sales in to your bank account once every seven to fourteen days not straight away unlike ebay (but this could work out to be on a shabbos possibly) Thank you very much Y Gross
This is not a problem in halachah, and it is permitted to sell via Amazon, even if the item might be sold on Shabbos.
Under certain circumstances, the Sages permit making a sale on Shabbos, and the money from such a sale is permitted, and not sechar Shabbos.
The problem will selling on Shabbos is that usually, it is not permitted to engage in commerce on Shabbos. In this case, you are not of course engaging in any commerce, and therefore there is no prohibition. As for the money, no prohibition will apply (which is why it is permitted to operate a slot machine even if it works on Shabbos).
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