If you want to view front-end sales, you can use the following methods: 1) Use data analysis on e-commerce platforms to view the sales of front-end products, including sales volume, sales revenue, user reviews and other data; 2) Use social media attention and interaction to observe the popularity of front-end products; 3) Compare with competitors in the same industry to understand market share and competitiveness. The above methods can help you understand the sales of front-end products and conduct market research and product positioning.