Hi,
sorry to barge in, but thought I could offer some advice here!!
If you want to sell nappies, by far the easiest way is to become an advisor for one of the big companies, If I was to recommend anyone it would be babykind. But and there is a but, you have no control over prices etc and those prices need to be high enough for the supplying company to make a profit and still pay you a commission, then there is the initial outlay for your demonstration kit, I would say for a good spread you are looking at a couple of hundred pounds at least. The return on investment really needs to stack up for this to work out.
Now onto becoming an independent nappy advisor/seller, pretty much the same apart from you source the stock from suppliers yourself and have to generate your own leads, but you have full control, the only drawback really is minimum order quantities from suppliers, some are fairly low at around £30 which is great but some are as much as £250 which is rubbish if you dont want to hold several hundred pounds worth of stock with no confirmed orders. A website is cheap and simple to setup but will probably take over your life (mine has, although not complaining yet), the most important thing to start of with is getting yourself known, advertisin is probably the key thing, and sites like this do wonders for a sites popularity, one post with a link praising can be worth a thousand CPC ads on google.
In addition I found that when I setup, most suppliers wanted to know in quite some detail where there products were going to be sold, how they were going to be displayed and some even stipulated requirements on how to display etc so as to not 'damage' their brand
The most important ingredients you will need are lots of determination, effort, some more determinaton, some more effort, lots of time and some wine for when you do get a moment to yourself, hope that has helped a little (probably hasn't) If I can help you with anything else just let me know.
Best of luck and I hope it all works out for you!!