May I create a texture pack with these textures and sell it on TurboSquid/Cornucopia/Second Life?
No. You are not allowed to sell or distribute textures created with these images. To make this extra clear: Modified or not, images may not be redistributed or sold as a competing product (textures)! This is a very common clause in the license agreement of almost every texture and stock-photography website. If you wish to profit from selling texture packs or scrapbooking elements, your only option is to get a camera and photograph your own textures.
