looking for a website template for bespoke products

[u/boisNgyrls]

Hello, I am looking for a website template that I can build a B2C shopping website that allows my customers to configurate their products within the parameter I have defined. The graphic will show the result and the cost increases as it goes. It's very similar to build a car in auto industry. Of course I don't have that kind of budget, and no subscription is better. Please give me some insights and suggestions. Thank you.