On the other hand: the main reason of bankruptcy for small businesses is bad financial management. Simply said: to forget to make invoices, not checking the payments and not following bad payers. 1 out of 3 is going bankrupt for this reason alone. I had to learn it myself. I spend at least 10% of my time with financial stuff. I don’t love it but the bills get payed ;-)
If you cannot find a specific product in an affiliate marketplace, then check out the brand’s website. Many companies have established affiliate programs that accept applications. Some companies choose this method to create a more exclusive affiliate program. Typically, these programs have stricter audience requirements than affiliate marketplaces, but it is still worth a try. When in doubt, apply for the program.
Consider selling in lots. A lot is a collection of similar items that is sold in a group. For example, if you have a collection of books, magazines or similar pieces of jewelry, consider selling them all at once in a lot. You many not make as much money as you would have if you sold each item separately. However, the items will likely sell more quickly in a lot than they would individually.