There are a few constants that are important for selling on eBay. These include:

• eBay customers expect high-quality products. Make sure your products are well-made and meet eBay’s quality standards.
• eBay is a competitive marketplace. Make sure your prices are competitive with other sellers.
• eBay customers expect good customer service. Make sure you respond to customer inquiries promptly and resolve any problems quickly.

By following these constants, you can increase your chances of success on eBay.