My Mom and Sister really want to start a business on eBay, but don’t have any sort of direction. How do they become authorized resellers / distributors?

I am looking for a good site to buy wholesale handbags from so I can resell them on Ebay. I’ve looked around and it seems that most of these sites are scams. Like wholesalemixup for example. So has anyone found a trusted site that you’re maybe currently using for your Ebay business? Or just found a site where you had success buying bags for your own personal use? Any help would be appreciated.