Do you think I should open an online store?

I have some things that I am not going to use anymore (most of them are textbooks from my college years). I did web search about selling items, and I do have option on (1) Amazon (2) Ebay (3) my own online store. But the first two options that I do have to pay fees, so I am thinking about open an online store for myself. Do you think I should open an online store? Thank You.

Half.com (an Ebay site) is what you should use. Opening a whole store is a waste. Sell the books on Half or Alibris (could take time) and the other stuff on Craigslist or Ebay.