It is usually free to join affiliate programs so there is not a big startup cost. However, it does take work and effort, especially in promoting your affiliate products. You will need to consistently market the products and there are many free ways you do this.

Make sure you choose affiliate products to promote that are high quality products as customers will relate you with the product, even though it\’s not your own.

Also, choose products that are searched for and needed by a certain niche that is willing to spend money on them.