Free, sourced, dated lessons on starting an Amazon business in the United States and Europe. https://goldenriverstone.com/ 2026-09-04T00:00:00Z Golden River Stone team info@goldenriverstone.com © 2026 Golden River Stone LLC https://goldenriverstone.com/learn/amazon-us/02-llc-ein-and-forms 2026-09-04T00:00:00Z 2026-09-04T00:00:00Z

Whether a U.S. company is needed at all, how Wyoming, Delaware and New Mexico compare on published fees, getting an EIN with no Social Security number, why BOI reporting no longer applies to U.S. companies, and the Form 5472 filing whose penalty starts at $25,000.

https://goldenriverstone.com/learn/amazon-us/01-choose-model-and-product 2026-09-04T00:00:00Z 2026-09-04T00:00:00Z

A filter that rejects most products in under a minute: model first, then category fees and gating, then the physical object, then competition — and a unit-economics sheet that includes advertising, returns and the cash cycle.

https://goldenriverstone.com/learn/amazon-us/00-what-it-costs 2026-09-04T00:00:00Z 2026-09-04T00:00:00Z

The four selling models and what each demands in cash, Amazon's two selling plans and referral fees, the FBA charges that arrive later, the state and federal fees outside Amazon, and an honest way to budget the variable costs.