Product Purchase "Lifecycle" Preview

Would like to see (preview) exactly what a customer would see when purchasing a product without actually purchasing a product on my live site (or waiting for a customer to do so).

Recommend fielding a system that actually walks a developer or Wix Editor X client through the entire process before this site is live (e.g. selecting product, adding to cart, entering in contact, shipping, (generic) credit card information, and clicking the purchase button).