Concur with Jimi that the most ideal antonym for "free of charge" is "available for sale." But, "acquired" or "priced" could work as the opposite of "free of demand." This e-book is free of demand. This e-book is priced. That dessert was free of cost. That dessert was purchased. Need https://seo-expert69519.is-blog.com/43369037/rumored-buzz-on-backlinks-strategy