Amazon cross-border e-commerce does not necessarily need to purchase goods by itself. According to your business model and needs, you can choose the following purchase methods:

1. Self-purchase: According to your product positioning and market demand, go to wholesale markets, manufacturers or overseas suppliers to purchase goods. This can ensure the quality of goods and reduce costs.

2. Agent procurement: Cooperate with domestic and foreign wholesalers and agents and let them provide you with goods. This method can save inventory and logistics costs, but you need to pay attention to the reputation of the agent and the quality of the goods.

3. Cross-border e-commerce platform procurement: Some cross-border e-commerce platforms provide purchasing and delivery services. You can choose a suitable platform, select goods and sell them. This method is simple and fast, but you need to pay attention to the platform's policies and fees.

4. Cross-border supply chain services: Choose a cross-border supply chain service company, they can provide you with one-stop services such as import sources, warehousing, and logistics. This method can reduce operating costs, but you need to choose a reputable service provider.

5. Joint venture or cooperation: cooperate with overseas suppliers, manufacturers or other cross-border e-commerce companies to jointly develop the market. This method can share resources and markets and reduce risks.

In short, Amazon cross-border e-commerce can choose the appropriate purchase method according to your actual situation and needs. No matter which method is used, you need to pay attention to product quality, logistics efficiency and cost control to improve the competitiveness and profitability of the store.