If you have to earn $50-$100 commission you have to sell product of cost $500-$1000 (If you’ll get 10% commission). If anyone who is reading have the potential to sell product of this much amount then why not he/she should start selling his/her own product. And money ultimately comes when a service or product is sold! So if you can write an Ebook then write another which you can sell for money!
However, with online employment comes fraudulent companies who scam job seekers into signing illegitimate offers. "There is currently a 61-to-1 scam ratio among work-at-home job leads on the internet — that is, for every legitimate job, there are 61 scams," says Christine Durst, cofounder of RatRaceRebellion.com and consultant to the FBI on internet scam.
You can sell your ebooks through Amazon's Kindle program or Apple's iTunes Connect, which gives you access to a large majority of the digital-book reading market and the barriers for entry are incredibly low. You don't need to invest lots of money to make this happen, but you do need to invest lots of time, not only in writing the ebooks, but in marketing them as well.
Be sure to check what kind of customer support you can expect from your affiliate program once you have signed up. Do your research online and if possible, speak to other sellers using the program to get their thoughts. Can you speak to someone via phone or Skype or do you have to wait 72 hours for email responses? Be clear on this because trust me, you will need support at one point or another.