This week in e-commerce news highlights the challenges facing Chinese sellers on Amazon and Temu as they grapple with heightened competition and declining profit margins. Meanwhile, TikTok Shop is making a splash in Spain and Ireland with impressive Black Friday sales. Amazon is set to make its entrance in Ireland in 2025, and Seller Central has introduced new features, including a minimum price floor for discounts and enhanced customer service quality insights. Additionally, Helium 10 has rolled out updates like parent-level and ASIN-level sales estimates, along with a new feature allowing Elite members to select multiple date ranges in Brand Analytics. Lastly, a training tip recommends using Helium 10's profitability calculator to evaluate profit margins for TikTok Shop.