SaaS Billing Database

I'm looking to develop a SaaS billing database that utilizes a pay-per-use subscription model and doesn't require any specific integrations with other systems. My goal is to provide customers with a great range of pricing tiers, with more than 7 to choose from. The project will also include developing a user friendly interface that's intuitive and easy to navigate. Ultimately, I want a solution that's custom built to my exact needs and specifications. If you have experience in developing SaaS billing databases with a pay-per-use subscription model and a multitude of pricing tiers, please get in touch to discuss the project further.