Running a successful online store takes more than just installing the right plugins. You will need to get your pricing strategy right if you want to have success in the long run. Catna is a handy plugin that lets your visitors name their price. It lets you create dynamic rules, so only certain products and categories are covered.
Catna allows admins to set an acceptable price range for offers. You can also set it up to allow your customers to purchase certain products for free. It has price validation built-in to stop erroneous offers. Catna supports Smart Offers, so admins can set up price offers based on product quantity. villatheme is the developer behind this extension.