One of the first ideas to consider before you open an online wholesale website is to better understand how the wholesale supplier system works, and better yet a system that can work for your online store.
The issue with online store shoppers:
Most wholesale systems are spotty at best; it’s an eclectic collection of very random unhelpful “register first” websites. Many are in the US but most are sprinkled everywhere in the world. Most of these sites are OK, many are great, but quite a few just waste your time with a long registration process and fees.