I have many ebooks. Can I sell them? These ebooks are copyright work of their authors. There are no warning on ebooks that you can not resell them. So, give me brief info about this.
You should first contact the person whom you bought the eBook from, ask them if you can resell the product. If the person says no, than negotiate in terms of sales. Maybe give the person a portion of all sales. I'm sure they'll let you, it just depends on the person whom you bought it from.
Are you seriously asking this question? Assume that you cannot re-sell something unless you are explicitly given resell rights.
As far as I'm aware eBooks are no different to music, films, games or other media. If you did not create it, you do not automatically own the rights to sell it. If in doubt, ask the original author.
Pretty much all you have to do. If you didnt make it you cant sell it. Unless the ebook says its ok to resell.