Amazon self-fulfillment sellers can open ads, but they need to obtain a shopping cart first. If they do not obtain a shopping cart, even if they can see the ad portal in the background, they cannot be opened normally.

In terms of advertising, you can group products, generally choose products with a price of more than $10, open ads first, and then further select from the feedback data, select products with good conversion rates and sales, increase advertising investment, and strive to make them popular; at the same time, seasonal products can take advantage of the sudden increase in seasonal demand, open ads, and continue to divert traffic.