The cost of joining WantMatures depends on the subscription plan you choose. According to reviews, the basic membership is free, but it doesn't include many features and limits your access to the app. There are also various payment options for premium subscriptions that start from $9.99 per month and offer a range of extra features. Paying members can use special features such as video chat, send messages, and view unlimited profiles. WantMatures has an affordable pricing structure and offers great value for money for those looking for an enjoyable online dating experience.