For a basic software wallet, you might charge less. But if you want to go all out with extra security features, fancy designs, or integration with other platforms, the cost could climb higher. The cost of developing a cryptocurrency wallet can vary widely depending on several factors such as the complexity of features, platform compatibility, security requirements, and whether you're building it from scratch or using existing frameworks. Overall, it's best to consult with experienced developer or crypto wallet development company to get a more accurate estimate based on your specific requirements and goals.