Wow, it seems like a interview.
To be an affiliate, it is not good to promote all the products from a website. That means you should choose something really good and serve customer well. It is impossible for a company to provide all low price and high quality products. However, we really have some such as this badminton product: http://www.opentip.com/product_info....ucts_id=180375
To find more that kind of products, I suggest you do research on google shopping or other comparison websites. You will find the sales point.
I hope I answer you well and thank you for your interest in Opentip.com Affiliate Program.