Plugin for WooCommerce or Easy Digital Downloads

Hello, I need a plugin developed for WooCommerce or Easy Digital Downloads on Wordpress. The plugin must do the following: 1) Allow for dime sales. That is to say, allow me to set it so the price of a product automatically increases by X after Y amount of sales. For example, start a product at $100 and after 1,000 purchases, increase the price to $200, then after another 1,000 purchases increase the price again to $300, and so on. 2) The ability to sell software with serial keys and download links. I know both WooCommerce and Easy Digital Downloads already have this functionality (either natively or via plugins) but they don't provide what I need. I need the ability to enter my own serial keys, either manually or in bulk via CSV file. Thanks!