For this reason, you can choose to sell other peoples products and services, either exclusively or in addition to your own product line.
You can stock an entire store with products, buy a franchise or other enterprise, or have a hearing or distribution agreement. However, this could require a significant financial investment.
Here, then just a few inexpensive ways to profit from selling other peoples products and services.
1. Commission
Serve as a sales representative or agent of a company and sell their products or services to a percentage commission from the sale.
Many companies online offer associate or affiliate programs you can enroll to earn commissions from selling their products and services. Sometimes you can even make money on the efforts of other affiliates who sign up via your website.
Thus without having a product of their own, some people serve their sole but substantial income from affiliate programs.
2. Transit Sales
You can take other 
people's products on a consignment basis, making your commission when you sell the product. Many charity shops, arts and crafts shops and other retailers operating in this manner.
You can also sell products from other online auction sites like eBay or Yahoo! Auctions.
3. Drop shipping
You can buy inventory wholesale and try to sell it retail, but what if it does not sell? Even if you sell, you really want all that money tied up in stock? For these reasons, many companies drop shipping as a way of doing business.
Whether from your home, shop, directly from your website or via an online auction, you can arrange to sell a product before you buy it. That way, you have nothing invested in inventory and will not get stuck with stock that will not sell.
For example, let's assume you've just sold a product to a customer for $ 100.00 plus shipping charges of $ 15.00. After receiving customer payment, you now have to email or fax your order to your drop ship supplier. You must pay your supplier the cost of your $ 50.00 plus $ 15.00 shipping, so you a $ 50.00 gross. Your supplier will then send the product for your customer.
4. Finders' Fees
Did you know that you can earn fees simply by introducing buyers and sellers?
For example, a mining company needs to buy some hard to get equipment for their operations. You can negotiate a percentage fee finder to locate that device on them.
Conversely, you can also get a finder's fee from a company trying to sell their surplus equipment, but have difficulty finding a buyer.
5. Joint Ventures
Joint venture arrangements can be profitable. As an example, you could let others feature product in your e-zine or newsletter in exchange for a commission, although they do not currently have an affiliate program.
The above list of inexpensive ways to make money on other people's products and services is by no means exhaustive. But it certainly illustrates that with some effort, could other people's products make you rich.
